Exam one Essay Example | Topics and Well Written Essays - 250 words

Exam one - Essay Example Modernism changed the world’s perspective on art, music, jobs and housing. Many new ways of life had also changed the public’s view of many different things. This was an interesting time for growth and finding one’s self. Art in the modern era was different than any other forms of art seen before. Many new artists were trying out a new way to express themselves. Literature was also influenced on many mixed feelings. The unsteadiness of the upcoming war led to art that could be defined without imperfection. Art as described in the quote, â€Å"similar to a pair of glasses that make two visions become one† (Toronto1962). Modernist literature consists of a world within a world. This perceived world was very imaginative. Many looked to this form of modernist literature as a way to get away from the many surroundings. This new way of thinking left writers and artist wondering about life. Many felt that life was nothing without the presence of God. This feeling is commonly expressed in many forms of literature in the twentieth century. This anxiety and realist approach made its mark on history in a modernist

Levels of Life Worksheet Essay Example for Free

Levels of Life Worksheet Essay Complete all three parts of this worksheet. Part I: Atomic Structure – Fill in the missing information on atomic structure and organic compounds. Atomic Structure Subatomic Particle Charge Location in an Atom Proton Positive Nucleus Neutron Neutral Nucleus Electron Negative Spherical (outer-shell) Organic Compounds Large Biological Molecule Atoms it Contains Monomer(s) Function(s) in Living Organisms Carbohydrates C, H, and O Monosaccharides Source of energy Lipid C, H, and O Glycerol and fatty acids Cushion and insulate organs; builds cell membranes Protein C, H, O, N, and S Amino Acids Helps chemical reactions, provides support and structure, provides transport within bodies and provides movement of body Nucleic acids C, H, O, N, and P Necleotides Stores and transmits genetic information Part II: Characteristics of Living Organisms – Seven characteristics distinguish an object or thing from an actual living organism. All seven characteristics must be present simultaneously for something to be considered living. Fill in the remaining characteristics in the following table. Characteristics of a Living Organism 1. Order – exhibit complex but ordered organization. 2. Regulation- the environment outside of an organism can change but the organism is able to internally adjust to maintain or regulate appropriate levels for survival 3. Growth and development- the information provided by genetics which determines the growth and development patterns of an organism. 4. Energy utilization- the energy an organism takes in to use in preforming life activities. 5. Response to the environment- the response of a living organism to its environment. 6. Reproduction. Organisms reproduce their own kind. 7. Evolution. Reproduction underlies the capacity of populations to change (evolve) over time. Part III: Write a 200- to 300-word explanation of how atoms make up organic compounds, which make up all living organisms, addressing all three domains. According to Campbell Essential Biology with Physiology, (2010) how atoms make up organic compounds, which make up all living organisms, by  addressing all three domains, are that atoms unite with carbon elements. For an example the elements could be hydrogen, oxygen, and nitrogen. These three elements bond with atoms, and create carbon and hydrogen atoms. Then the three elements then become a linked chain, the chain produces three domains that the body and all living organisms need to function. They are considered as large biological molecules. Carbohydrates, proteins, and nucleic acids are the three domains of the atom chain. The small molecules are what link the large biological molecules together. Carbohydrates are created by carbon, oxygen, hydrogen linking together which form polysaccharides. The chain is called a polymer, which is a small molecule. Carbon, oxygen, hydrogen, and nitrogen unite and form amino acids. The Amino acids then produce proteins. Also when carbon, oxygen, hydrogen, and nitrogen unite combined with sugars it becomes nucleotide molecule. The nucleotide molecule then produces DNA and RNA. Carbon, oxygen, and hydrogen united together then form fatty acids. The fatty acids produce glycerol, and this is how lipids are formed. All three domains of that create an atom are living organisms that bond with each other to create organic compounds that produce the chains that release the carbohydrates, proteins, and nucleic acids. All three of these basic atoms are needed to grow food, and digest food that make up all living organisms including humans, animals, and natural gases. Reference Eric J. Simon, Jane B. Reece, and Jean L. Dickey. (2010). Campbell Essential Biology with Physiology,. Retrieved from Eric J. Simon, Jane B. Reece, and Jean L. Dickey, SCI/230 website.

Innocence Is Bliss in OConnors Short Stories Essay -- Literary Analy

There’s is no freedom from the post-lapsarian world. The attributes of this fallen world are very prominent in O’Connor’s short stories. However, she chooses not to include all of her characters into this nutshell. Instead, she gives her female characters innocence and monist ideals. Ironically, O’Connor isolates them from the rest and gives them a pitiful image as she goes on to mock their ways. The obliviousness and innocence of the characters is effortlessly destroyed in the post-lapsarian world because of their lack of foundation. O’Connor centers her stories on the attributes of the post-lapsarian world, which is the world after the â€Å"Forbidden Fruit† was eaten in the Garden of Eden. The fact that these stories were written soon after WWI also obstructed their outcome. The carnage of the war exemplifies the malevolent nature of O’Connor’s characters. For instance, in her story: â€Å"The Misfit,† a mass slaughter of an entire family occurs. After killing the last family member, The Misfit tells his assistant: â€Å"Take her off and throw her where you threw the others,† (O’Connor 22). The Misfit doesn’t bother looking back at the massacre he had just executed. This is a manner of establishing that such cruel and spiteful actions take place only in the evil of the post-laspsarian world. Likewise, in â€Å"A Circle in the Fire,† three boys take the liberty of allowing themselves to Mrs. Cope’s farm with no intentions of leaving. Not only does Mrs. Cope welcome the boys, she is also very hospitable towards them. Yet, the malicious and ill-mannered actions of these boys force Mrs. Cope feel obliged to them to leave. In response to the insult of being asked to leave, they decide to incinerate her farm. O’Connor creates these charac... ...ld beyond their homes. The characters learn the hard way that there is no escaping reality, especially since they are parts of it. This enlightening is why their blissfully happy lives have to be terminated. Works Cited 1. O'Connor, Flannery. A Good Man Is Hard to Find and Other Stories. New York: Harcourt Brace Jovanovich, 1977. Print. 2. Schaum, Melita. ""Erasing Angel": The Lucifer-Trickster Figure in Flannery O'Connor's Short Fiction." The Southern Literary Journal 33.1. Department of English of the University of North Carolina at Chapel Hill, 2000. Web. 12 July 2010. . 3. Sparrow, Stephen. "The Innocents of Flannery O'Connor." Flannery O'Connor: Comforts of Home, The Flannery O'Connor. N.p., 22 July 2002. Web. 12 Oct. 2010. .

Changing Role of Women

Since the end of world war two, in 1945, Australian society has witnessed many dramatic changes in the rights and freedoms of women. Women, who had been encouraged to take on men’s jobs during the war were expected to vacate these positions and return to their traditional vocation in â€Å"home making†. Throughout the 1950’s and early 1960’s women were expected to either stay at home or work in underpaid â€Å"women’s jobs†. Women’s wages were significantly less in comparison to the wages awarded to men who performed the same task. The Commonwealth Arbitration Court ruled in 1949, that a women’s basic wage should be set at 75% of the male rate. This was the practice throughout the 1950’s when there was a large growth in the textiles, clothing, footwear and food processing industries depending on the cheap labor that women provided. The view that a woman’s place was in the home was reflected in and shaped by the Australian education system. The emphasis of the limited schooling available to girls was in the home sciences . i. e. cooking and sewing. The lack of educational opportunities for women only reinforced sex role stereotyping and gave women little chance to achieve their potential. The introduction of the oral contraceptive pill in 1961 gave women the chance to achieve their potential. It gave them the freedom to choose when and if to bear a child. It provided women with the opportunity to concentrate on furthering their working careers, where available, thus leaving the domestic housewife image behind. It provided women with power over their bodies for the first time; they were in control of their sexual relationships. Thus, by the end of the 1960’s, women were actively seeking greater rights and freedoms in society and in the workplace. Demonstrations and protests were a feature of this movement, known as the woman’s liberationist movement (today referred to as feminism). The female liberationists aimed to overturn the notions of female inferiority and male dominance in Australian society. Their dream was to free women from the restraints society placed upon them; to challenge the status quo. Zelda D’Aprano was one Australian woman who formed the Woman’s Action Committee in 1969. She chained herself to the doors of the Commonwealth Building in Melbourne demanding equal pay for both sexes. Germaine Greer was also an outspoken liberationist whose book â€Å"The Female Eunuch†, 1970 , challenged the thinking of conservative male dominated society. There was a diverse range of women’s liberationist groups formed to campaign for specific issues revolving around three main areas: equal pay, discrimination in the workplace and equality of opportunity in the workplace and society. Specific issues included: †¢Child Care †¢Equal pay for women †¢Family Planning †¢Divorce †¢Discrimination in the workforce and from lending institutions The causes, clear arguments and outspoken activism of these groups attracted much media attention and faced resistance from traditional and conservative sections of society. For example church leaders were outraged when women’s liberationists called for legalized abortion. Equality in the workplace has been and still is an important issue. In theory, the federal Equal Pay Case of 1969, determined that women receive â€Å"the same wage as men for the same work†; but this principal would not apply where the work was essentially or usually performed by women. By 1972, the Liberal government continued the debate, suggesting in Cabinet that wage rates should take into consideration â€Å"training, skills and other attributes required for the satisfactory performance of the work†. See Source A, which is a copy of a Cabinet document, dated 24 October 1972, demonstrating this stance of the Liberal government in relation to calls for Equal Pay. By December 1972, the Labor Government had come to power and it promised to implement the Equal Pay for Equal Value principle in female dominated industries; though such a principal has proven difficult to implement. Equal opportunity has been and still is another important issue. In 1972, the Women’s Electoral Lobby (WEL) was founded. WEL sought out politicians views on woman’s issues. It has had a major role in lobbying and influencing governments to pass laws friendly to woman in areas such as woman’s health and child care. See Source B, a photograph of a demonstration in Sydney in 1979, in which WEL activists are advocating for Medicare funding for abortions. By the beginning of the 1980’s, the fruits of the labor of the women’s movement could be seen in many of Australia’s legal reforms: †¢The family law act 1975 had established the principle of No Fault Divorce; removing the social stigma associated with woman and divorce. †¢The anti discrimination act 1977(NSW) which made it illegal to discriminate on terms of gender, marital status or pregnancy Sex Discrimination Act 1984 a commonwealth act banning discrimination against woman. †¢The Affirmative action act 1986 that was later replaced in 1999 by the equal opportunity for woman in the workplace act. By the end of the 1990’s most woman believed that their struggles for equal rights and freedoms with men in society had been won, but that is not necessarily the case. While women’s rights may have been enshrined in law, it is women’s freedoms in society that have yet to be fully realized.

Bean Trees Essay

Most authors convey an important message or idea throughout their noevls to give a greater understanding to their readers. In Barbara Kingsolvers novel, ‘The Bean Trees’, a strong idea that was developed was the possiublity of new beginnings. ‘The Bean Trees’ is the story of the protagonist Taylor Greer, who starts off on a journey from her home town of Kentucky to Arizona. Along the way she she is given an abandoned child which is the start to her learning about motherhood, becoming a women, the power of friendships and also learns to be capable. The idea of new beginnings is the ability for characters to start over and leave their past behind them. It was mainly developed through Taylor, Turtle, and also a Guatamalan couple Estevan and Esperanza. The first person who helped develop this idea is Taylor. At the beginning of the story Taylor was called Marietta before she decided that she wanted to have a clean break because she had never been crazy about the names which she had been called previously. I didn’t have any special name in mind, but just wanted a change’ this fitted into the theme of new beginnings because she was capable of leaving behind her old life and things that surrounded her name and had the opportunity to have the chance to create a new destiny for herself. As well as giving herself another chance to start her life and live it the way that she wanted through the changing of her name she also left her home town, house, friends, and mother all in search of somewhere new to live her life. She used chance to decide where she was going to stop with the use of her car. Wherever it ran out of fuel or something happened to it, she would stop there. With the ambition of leaving her old Kentucky life behind her, she started a journey which led her to Oklahoma. this just happened to be the place where she was given an abandoned child. This was another new beginning for Taylor. ‘Can you talk?†¦ What am I supposed to do with you tonight?†¦ What do you eat?†¦ ‘ This series of questions that Taylor asked the abandoned child showed that she had absolutely no idea what she was doing and still had to learn the first steps of becoming a mother. It was a new beginning for her to take on responsibility for someone else. She had to grow, learn and understand in order to take care of the child that she had suddenly gained to take on her journey. She may not have understood what to do or how to do it, or even truly wanted this new beginning, but all in all she was given the chance. Kingsolver suggests through the use of Taylor that often life presents us with unexpected occurances, but if grasped correctly can lead to a possible great change, and therefore future. Through the use of Taylor as a character Kingsolver helps to show us that around the corner, in every situation, if something as small as a car journey, can lead to amazing opportunities to start afresh in our lives. Turtle is another character that helps develop Kingsolver’s idea of new beginnings. Turtle is an abandoned 3 year old Indian child, who was abused when she was younger. After her mother died she was left to an unexpected Taylor who was just someone passing through the town, but turned into the receiver of a child who she had no clue what to do with. On later inspection of the child which she named Turtle she noticed that her body was covered in ‘bruises and worse’ as Taylor said. When Taylor realised that turtle was a girl she said ‘that fact already burdened her short life with a kind of misery that she could not imagine’. Through this you can picture just how horrible the life this young child must have had. However this was the end of her bad story and the beginning to a new one. Just like Taylor she is given a new name, but also a new mother, new friends, and a new chance. With the opportunity Turtle is now able to grow. ‘Turtle had managed to get through her whole life without a book, I suppose, and then she had two of them bought for her in one day. ‘ This quote shows the beginning if Turtles chance of recovery. She was a 3 year old stuck in an 18 month old body. She was a child with a horrible past, but a chance to start over. The development of Turtle made you understand that the majority of people are at some point given the ability to have a new beginning, no matter how terrible their life was before hand. Estevan and Esperanza are a Guatamalan couple who are also given the opportunity to have a new beginning and therefore helped develop the idea of new beginnings. Estevan and Esperanza are people who are illegally living in Tucson. Esperanza and Estevan live in Mattie’s sanctuary that she has set up for people like them. After becoming good friends with Taylor they decide that they need to move on from Tucson and constantly running from the law. With Taylor and Turtle they set off to go to a safe house in Oklahoma. They were considered ‘illegals’ and needed to be taken out of the country. however there should not be people judged as legal or illegal. There is only a difference between people who are good or bad. Because of this they are taken to a safe house where they are unlikely to be taken away. Instead of focusing on the negative once at the church Estevan says ‘don’t think of us stuck here forever. Think of us back in Guatemala with our families’. His optimism in their new ability to have a clean break and go back to their home country showed the idea of new beginnings in a different light. It'[s not always physically being somewhere that gives people their new beginnings. Sometimes it is just a chance that makes believing in what was, or what could be, possible again. This is how Estevan and Esperanza helped deleop new beginnings as an idea in the novel. In conclusion, everyone has a chance at a new beginning, whther big or small. Three different sets of characters showed this throughout the novel ‘The Bean Trees’. Taylor helped the idea become present in the story as well as develop in as not only the physical actions that allow the new beginning to happen, but also a state of mind. Turtle developed the idea so that it showed the readers that just because someone’s life starts out badly, it doesn’t mean their opportunity to have a new beginning wont come along. Estevan and Esperanza developed the idea so that you realised sometimes all that you need is faith to have the chance at a new beginning. In the end new beginnings was an idea that many characters showed their their own stories and therefore developed into their own way of showing the idea and allowing readers to understand it.

75th Percentile SAT Scores

An Explanation of 25th / 75th Percentile SAT Scores Much of the SAT data on this site and elsewhere on the web show SAT scores for the 25th and 75th percentile of matriculated students. But what exactly do these numbers mean, and why dont colleges present SAT data for the full range of scores? Key Takeaways: SAT Percentiles The 25th and 75th percentiles mark the boundaries for the middle 50% of admitted students. Half of students scored above or below these numbers.Having a score above the 75th percentile does not guarantee admission. Grades, essays, and other factors are important parts of the equation.Having a score below the 25th percentile does not mean you should not apply. Just be sure you consider the school a reach. How to Interpret 25th and 75th Percentile SAT Score Data Consider a college profile that presents the following SAT scores for the 25th and 75th percentiles: SAT Critical Reading: 500 / 610SAT Math: 520 / 620SAT Writing: 490 / 600 The lower number is for the 25th percentile of students who  enrolled in (not just applied to) the college. For the school above, 25% of enrolled students received a math score of 520 or lower. The upper number is for the 75th percentile of students who enrolled in the college. For the above example, 75% of enrolled students got a math score of 620 or lower (looked at another way, 25% of students got above a 620). For the school above, if you have an SAT math score of 640, you would be in the top 25% of applicants for that one measure. If you have a math score of 500, you are in the bottom 25% of applicants for that measure. Being in the bottom 25% is obviously not ideal, and your admissions chances will be lessened, but you still have a chance of getting in. Assuming the school has holistic admissions, factors such as strong letters of recommendation, a winning application essay, and meaningful extracurricular activities can all help compensate for less-than-ideal SAT scores. Most important of all is a strong academic record. Numerous studies have shown that high school grades are a better predictor of college success than standardized test scores. What the SAT Numbers Mean for You Understanding these numbers is important when you plan how many colleges to apply to, and when you figure out which schools are a reach, a match, or a safety. If your scores are below the 25th percentile numbers, you should consider the school a reach even if other parts of your application are strong. Note that this does not mean you wont get in- remember that 25% of students who enroll have a score that is at or below that lower number. However, when your scores are on the low end for admitted students, youll have an uphill fight to win admission. Because SAT scores still play a significant role in the admissions process for the majority of selective colleges and universities, youll want to do all you can to get the best scores possible. This may mean taking the SAT more than once, often at the end of junior year and again at the beginning of senior year. If your junior year scores arent what you had hoped for, you can use the summer to take practice tests and learn test-taking strategies. Fortunately, with the redesigned SAT, preparing for the exam focuses much more on learning skills that will help you in school than memorizing obscure vocabulary words. SAT Score Comparison Tables If youre interested in  seeing what the 25th and 75th percentile scores are for some of the countrys most prestigious and selective  colleges, check out these articles: Ivy League | top universities | top liberal arts | top engineering | more top liberal arts | top public universities | top public liberal arts colleges | University of California campuses | Cal State campuses | SUNY campuses | more SAT tables Keep in mind that many of these tables focus on the countrys most selective schools, so youll see a lot of schools for which SAT scores up in the 700s are the norm. Realize that these schools are the exceptions, not the rule. If your scores are in the 400 or 500 range, youll still find plenty of good choice. Options for Students with Low SAT Scores And if your SAT scores arent what youd like, be sure to explore some of these excellent colleges where the SAT doesnt carry much weight: 20 Great Colleges for Students with Low ScoresColleges that dont require SAT scores Hundreds of colleges have joined the test-optional movement, so if you have good grades but simply dont perform well on the SAT, you still have lots of excellent options for college. Even at some top schools like Bowdoin College, College of the Holy Cross, and Wake Forest University, youll be able to apply without submitting SAT scores.

Power Phys Essays

Power Phys Essays Power Phys Paper Power Phys Paper Controlled Variables Frequency of stimulation Type Of neuron Experiment 2: Effect of Frequency of Stimulation on Action Potential Generation 1. Dependent Variable Frequency to stimulation Type of neuron Stimulus Strength (voltage) 4. Which part Of the neuron was stimulated? Action potential is first generated in the dendrites of the neuron, or where the neuron receives the action potential of Other neurons. 5. Where was membrane potential measured? 6. What was used to measure membrane potential? RESULTS See Table 3: Membrane Potentials at Different Stimulation Voltages, by Location See Graph 1: Maximal deportation of membrane potential at axon hillock and axon after different stimulation voltages, 1. What was the resting membrane potential (no stimulation) recorded in Table 3? The Resting Membrane Potential Voltage ;-70 NV 2. At Which stimulation voltage(s) did you see detrimental conduction Of graded potential from axon hillock to axon? At V the graded potential went from 64. 8 738 3. At What stimulus voltage(s) did an action potential occur? Action potential occurred at V 4. What was the membrane potential at the axon hillock when the action potential was generated? The membrane potential was 30. 2 at the axon hillock at V when action potential was generated. S. For each of the stimulation voltages, indicate whether it was sub-threshold, threshold, or supersaturates. 2 V Subtrahend 4 V Subtrahend 6 V Threshold 8 V Threshold See Table 4: Effect of Supra-Threshold Stimulation Frequency on Action Potential Generation. See Graph 2: Number of action potentials generated at different times between simulations. 6. State the amount Of time between stimulations for each frequency Of stimulation. 25 Hzs 40 mess 50 100 Hzs 200 Hzs 400 Hzs 20 mess 10 mess S mess 2. 5 mess 7. For each frequency of stimulation, indicate whether the period between stimulation is longer or shorter than the length of an action potential. Length of action potential in pyramidal neuron is about 15-20 milliseconds (mess) 25 Hzs longer 50 Hzs same shorter 8. Estimate the length of the refractory period for the pyramidal neuron. The length of refractory period avgas approximately 10 mess between the 15-20 increasing the action potentials almost doubling them from 3 to 5. DISCUSSION 1. In Experiment 1, discuss why the amplitude of the action potential did not increase as stimulation voltage increased above threshold. All-or-nothing theory.. Once the threshold is met, a refractory period is needed. All and then nothing, repeat. 2. In Experiment 1, explain why the membrane potential between the axon hillock and axon either changed or did not change with subtrahend stimulus. Differences of NV or less are not significant, It did not change, Unless the deportation occurs, the sodium ions cannot enter created change. This only happens at the threshold, 3. In Experiment 2, explain why the membrane potential between the axon lock and axon either changed or did not change with threshold stimulus. Differences of I NV or less are not significant . It did not change Unless the 4. In Experiment 2, explain why the number of action potentials generated varied With increased stimulation frequency. Action potentials can occur more frequently as long there is a continued source of stimulation, as long as the relative refractory period has been reached, Which in experiment 2 the refractory period was complete. 5. Restate your predictions that were correct and give the data from your experiment that supports them. Restate your predictions that were not correct and correct them, giving the data from your experiment that supports the correction, 1) Exceeding threshold deportation does not change the likelihood to an action potential being produced, Due to the need for a refractory period this is (all or nothing) In the experiment from V-V in the axon hillock the difference in amplitude went from 30. 2 to 30. 9 (not a remarkable increase) 2) Amplitude does not change with distance, From the experiment, the action potential amplitude does NOT change as it propagates down the axon. (The change was small at 0. C,2) 3) Increasing frequency of stimulation of the trigger zone does not increases the production of the action potentials. This goes back to the threshold All or nothing theory. APPLICATION 1. KEF potassium levels affect resting membrane potential. Hyperemia (excessive levels of potassium in the blood) and hypoglycemia (abnormally low blood potassium levels) both affect the function of nerves and muscles. Explain how hyperemia will initially affect the resting membrane potential and the generation of an action potential. Hyperemia depilatories muscle cells, reducing the membrane potential from -90 NV to approximately -80 NV.

Is C the Most Common Answer on the SAT

Is C the Most Common Answer on the SAT SAT / ACT Prep Online Guides and Tips No doubt you’ve heard one piece of advice more than any other when it comes to test-taking: â€Å"If you need to guess on a multiple choice test, always pick C.† But is the popularity of this strategy an indication of its efficacy? Do you have a better chance at gaining points if you guess C on your SAT questions in comparison toany other guessing strategy? And if not, what can you do to improve your odds when guessing? Let’s look at the facts. Why You Should Answer Every Question on the SAT First things first: the old SAT is dead and gone, and so is any guessing penalty. You will not be penalized for getting a wrong answer on the SAT, so make sure to never leave a question blank! For every correct answer you choose, you’ll earn one point, and for every blank or wrong answer, you’ll earn zero points. If you don't know an answer and guess it wrong, you'll gain the same number of points that you would have had you left it blank (zero). And if you guess the question right, you'll earn yourself one point! Of course, guessing is still a last resort, sinceit’s always better to try to find the correct answer first whenever possible. But sometimes you’ll have no choice but to guess and that'swhere guessing strategy is key. There are two main types of guessing- educated guessing and blind guessing- and you’ll have to figure out which one to use based on the situation you find yourself in. So let's break down how and when to go about making each type of guess. Educated Guessing An educated guess is a guess based on some amount of reason and understanding, whether it be large or small. Typically, an educated guess means you’re able to eliminate one or more answer optionsor estimate a reasonable ballpark range in which the correct answer can lie. For instance, you can make an educated guess if you: Understand the gist of a question, but don't have the time to work through it completely Understand parts of a question, but don’t quite know how to work through it completely Are torn between a few answer options, but have some idea of what the answer can or can’t be For example, let's look at an SAT math problem: If you're not familiar with either the coordinate plane or slopes, or you just don't think you can solve this problem for any reason, then you can at least make an educated guess and increase your chances of picking the correct answer. It's all too easy to panic and choose an obviously wrong answerwhen you're taking a marathon test like the SAT, so try to take a beat and think strategically before you fill in a bubble. In a geometry problem like this, figures will generally be drawn to scale unless there's a specific line of text that says otherwise. If you know that coordinates are written as (x, y), then you know that p represents the value along the x-axis. (And if you didn't know this, then you can still infer it by seeing that the point (p, 0) has a rise of 0, which means thatp must be the value along the x-axis, not the y-axis.) You can immediately eliminate answer choices A and B, since they will be too small to equal p. Why? Ifyou eyeball where the -5 is along the x-axis and place a rough approximate at the opposite side on +5, you'll see why you can cross off A and B straight away. C or D must be the correctanswer because they are the only answer options where p is greater than 5. And, since the estimated location for +5 looks about halfway between 0 and p, Dis probably the best guess between the two options. [Spoiler: D is totally the right answer] Blind Guessing The second category of guesswork is blind guessing, which is a guess based more on chance than on reason. It's time to make a blind guess if you: Come up against a question and have absolutely no clue where to begin Areabout to run out of time and still have questions left to answer If you can’t eliminate any answer options (or don’t even have the time to read the question), you just have to fill in an answer bubble and keep going. Leaving a question blank is tantamount to throwing your points away, so you may as well fill in something. But when you have to make a blind guess like this (or multiple blind guesses), are you better off choosing C than any other answer choice? Let's see. Having a strategy makes any journey easier, and it's no exceptionfor the SAT Fact or Fiction: Is C the Most Common Answer on the SAT? If it were true that you're better off choosing C than any other letter, itwould mean that correct answer choices weren't randomly assigned.After all, if the answer keys were randomized, why should C be any more likely to be the right answer than any other letter option? Now, true randomization will depend on the type of test in question. Someof your high school teachers likely design their tests by hand, which means that their answer keys will not be statistically random. No matter how much your teachers may try to randomize their choices, human beings are NOT random and cannot properly randomize a series. For instance, a truly random sampling will actually produce bizarre strings of patterns- six B’s in a row, or twenty questions without a D- and most people do not (or cannot) create these patterns when they try their best to be â€Å"random.† Fortunately or unfortunately, this is NOT the case on the SAT. Unlike many of the tests you take in high school, SAT answer keys are completely computer generated. And computers are very good at being random. Every answer choice on the SAT will have a statistically even distribution of 1 in 4 for each answer choice letter, A, B, C, or D. In other words? There is no most common answer on the SAT. Ultimately, guessing C (or any letter!) will give you the correct answer only a statistical 25% of the time. Which means it's NOT true that choosing C will give you a better rate of success than choosing any other letter for your blind guessing. What to do, then? So How Should You Guess? If C isn't the most common answer on the SAT, then how should you guess? The truth is, that when it comes to making blind guesses, it doesn't matter which letter you pick, only that you stick to the one you choose every time you make a blind guess. The best strategy, and the one that will maximize your overall point gain, is to pick your favorite letter and fill it in for every blind guess. Whether that letter is A, B, C, or D doesn't matter- just be sure to stick with it every single time. So, if you like it best, then definitely go right ahead and choose C to be your designated letter! (Just don't expect C to be abetteranswer choice than A, B, or D.) But maybe youthinkthat this strategy soundsillogical. Why would you be better off filling in the same letter over and over again instead of doing your best to create a random guess spread? Let’s see. Once you pick a guessing path, just keep going forward and don't deviate! Why Does Sticking to One Letter Increase Your Odds of Guessing the Right Answer? Sticking by the same letter for every blind guess won’t increase your chances of getting any one particular question correct, but it will maximize your total point gain potential. Why? Because people aren’t random. If you’re making your own "random" blind guesses in a spread, you’ll almost certainly reduce your overall guessing odds. Your best attempt at random guessing can never replicate computer-generated randomness. By sticking to your same designated letter when making blind guesses, you are re-introducing an element of randomness and maximizing your chances for success over time. Let’s see this in action to better demonstrate why this works. Scenario: you’re down to the wire, and you’ve run out of minutes on the clock. You have 15 questions left and only a few seconds to bubble in your answers. There’s no time to even look at the questions, so now you’ll have to make the best blind guesses you can and figure out how to get as many points as possible before it’s pencils down. You’re left with two options: make a random guess spread, or fill in every letter with the same answer choice. Let’s see how each option does when compared to a real SAT answer guide [note: we are using the first 15 answers from the reading section of the 2016SAT test #1]. (Note: for our random spread, we tried to guess as randomly as we could without looking at the answer key, and for our consistent letter, we simply went with C.) â€Å"Random† Spread Consistent Guess (C) Correct Answers D C B A C B A C C D C A C C C B C D B C D B C B D C C C C B D C A A C B C C D B C A D C A By trying our best to guess randomly, we earned 2 points, but by sticking by a consistent choice of C, we earned 3 points (and spared ourselves the effort of trying to be "random"). Again, sticking to the same letter won't work better for each individual question, but on average and over a spread, the strategy will let you maximize your total point-gain. If you gotta roll the dice anyway, you may as well learnhow to do it in your favor The Take-Aways Is C the correct answer more often than any other? No. But is it the best letter to choose when you're in a bind and don't know what the right answer choice is? Well, yes and no. When it comes to making guesses, try to eliminate answer choices whenever possible. But if you can't, and you must make a blind guess, then stick to one letter and run with it every single time. If you want this letter to be C, then go right ahead! Just make sure you stick with it for each and every guess. C isn't any better or worse than any other letter, or any more likely to be the correct answer, but if you decide to stick with it for every blind guess you make, you'll have a better chance of success than if you try your best to be "random." What's Next? You've learned how to make the best possible guess on the SAT when you're in a bind, but remember that eliminating answer choices is always better! Check out our guideto eliminating answer optionson the SAT. Want more SAT practice? We've gotall the SATs available online, free and available for you to take aspractice. Not sure what SAT score to aim for? Check out what makes a "good" or "bad" SAT score and how to find the perfect score goal for you. Want to improve your SAT score by 160 points? Check out our best-in-class online SAT prep classes. We guarantee your money back if you don't improve your SAT score by 160 points or more. Our classes are entirely online, and they're taught by SAT experts. If you liked this article, you'll love our classes. Along with expert-led classes, you'll get personalized homework with thousands of practice problems organized by individual skills so you learn most effectively. We'll also give you a step-by-step, custom program to follow so you'll never be confused about what to study next. Try it risk-free today:

Life in Britain is expensive.As a result many mothers have to work to Essay

Life in Britain is expensive.As a result many mothers have to work to pay the bills. This has caused the break-up of family life and had a disastrous effect on - Essay Example are for under 2 years of age has gone up by 33% in the past 6 years (Easier Finance, 2008) and the cost of electricity and gas is up by 16% compared to last year (The Times, 2008) to quote a few. This situation has resulted in more people in a family especially mothers going out to work in order to make ends meet as revealed by a recent study that 1 in every 3 parent’s work (Easier Finance, 2008). There has been a substantial increase in the proportion of married mothers going to work since the mid-1960s according to an article published by McRae, S. According to a recent survey, the number of women going to work as increased by 18% since 1993 (Easier Finance, 2008).A major reason identified for this is the increasing cost of living and in addition work also provides women confidence in themselves, a way of exposing their skills and also increased social contact (Orr, J, 1997). The publicly funded childcare mounts to only 2 % of children under 3 years of age. While earlier on mothers took up part-time jobs now they prefer to go for full-time jobs in order to make ends meet (Orr, J, 1997, Reynolds, T, Calleder, C, Edwards, R, 2003).This trend of both the parents going to work has affected the quality time they spend with their children (Easier Finance, 2008). A study conducted has revealed that children of working mothers showed lesser educational achievement due to lack of ma ternal care (Orr, J, 1997). The study also showed that among working mothers, children of mothers who worked part-time fared better in examinations compared to those whose mothers worked full-time reflecting the fact that the amount of time spent on children by the mother had an influence on the cognitive development of the child. Another new trend that is fast growing is the atypical working hours taken up by mothers. This includes working at weekends and in shifts during weekdays in order to manage both home and work. A Recent study has revealed that children get to spend less time with

Diversity in the work place (USA) managers challanges Research Paper

Diversity in the work place (USA) managers challanges - Research Paper Example Legislations and new technologies have made it possible for those with disabilities to join the workforce as it has become unlawful to deny a qualified person job opportunity due to physical disability (Nelson and Quick, 2012). Globalization in business transactions has also resulted in a diversified workforce as business organizations continue to discover new markets leading to opening of branches abroad therefore bringing together people from diverse national origins to work in teams for the organization (Cullen and Parboteeah, 2013). I recently visited a bank to open an account and did not fail to notice the racial, gender, and cultural diversity of the employees. On reading the banks brochure I discovered since it was an international banking agency, employees could be rotated all over the world. The U. S society is also a factor in workplace diversity where Nelson and Quick (2012) note that by about 2020, the country’s minority population will make up over one-half of new employees who join the U.S. workforce. This the authors point out is as a result of the improved participation rates of African Americans and Hispanic Americans in the labor force. Further, the authors see white non-Hispanics in the workforce making up 68 percent by the year 2020, 14 percent Hispanic, 11 percent African Americans and 5 percent Asian. The authors note this is an improved percentage that will see the workplace being more diversified (Nelson and Quick, 2012). Diversity in the culture of employees might pose a big challenge to managers who want to work with such a team. One of the major challenges for a diversified workforce is based on the difficulties in communication. People from diverse cultures have different ways of encoding and decoding messages whether verbal or nonverbal. Such cultural-based interpretation of communicated messages may lead to misunderstanding among employees leading to poor workplace relations due to misinterpretation of each other’s in tentions (Reece, 2013). Workplace diversity runs the risk of causing disorganization in the work place. People from the same background tend to form their own subgroups since they present the same ideas and viewpoints. This poses a challenge to the management, as they cannot rally all the employees to take a common stand through consensus building. Due to the disorganization in the workplace, the organization suffers as production is lowered when all employees and management cannot come together to champion a common course. Diversity in the workplace comes with stereotypes on how different groups of people work in the organization. Stereotyping increases stress and anxiety as the worker faced with such a challenge feels discriminated upon leading to low output levels (Nelson and Quick, 2012). The problem for mangers is coming up with strategic measure that will ensure effective management of people through creation of an organizational environment that attracts and retains diverse w orkforce by responding to changes in the demographic and social patterns

Quality Control Annotated Bibliography Example | Topics and Well Written Essays - 500 words

Quality Control - Annotated Bibliography Example The law provides special protection for infants and children; incentives for the American farmers to develop and maintain effective crop protection measures; the need for periodic evaluation of pesticide registration and tolerance for collection of scientific data and expediting approval of pesticides application. This law is under review for further refinements U.S. Environmental Protection Agency. â€Å"Accomplishments under the Food Quality Protection Act (FQPA)† August 3, 2006 -- 10th Anniversary of the Food Quality Protection Act. Pesticides: Regulating Pesticides. Web. This article presents the accomplishments of the Food Quality Protection Act, 10 years after it was implemented. This is only a narrative presentation but lacks data on numbers. The report said that FPQA has accomplished its task of ensuring that all pesticides used on food in the U.S. meet safety standards. EPA, in this report, has achieved to get the cooperation of the private sector partners to provide the world with abundant supply of healthy food products that met the American quality food standards. EPA hopes that with the tools provided to the agency by the law, they will continue to become a reliable food supplier in the world. Th. Blaha â€Å"The Importance of Quality Assurance and Food Safety in Modern Food Production Systems†. University of Minnesota College of Veterinary Medicine Department of Clinical and Population Sciences. Web. In the introductory of this topic, Th. Blaha, points to the food=borne disease and deaths caused by unsafe meat food products. He traced this to the lack of quality control system on meat inspection and proper hygiene; although author admitted that safety controls are much more advanced now than in previous years. Author said that consumers now are more health conscious as they demand for economical, healthy, tasty and safe food. Consumer behavior now shows respect towards animal

Reflection 03081 Essay Example | Topics and Well Written Essays - 1000 words

Reflection 03081 - Essay Example The presentation that we gave was about the first industrial revolution. The most important objective was to highlight the noteworthy inventions that were made in this period and what has happened since then. Tasks were assigned to individuals equally in order to ensure successful completion of the project. There was three group members, one was given the task to do the research and collect data, the second group member was reasonable for designing the presentation and I was give the task of writing the slide contents. The following sections will include the interpretation and outcome of our group efforts. As mentioned above, we were tasked with the preparation of a PowerPoint presentation regarding the first industrial revolution. We decided to conduct group meetings every alternative day in the week in order to discuss our individual progress regarding the overall presentation. The division of work was done very effectively as each of us go the work that we do best. However, one of the major drawbacks of our group was that no one was clearly defined as the leader. Although we were making individual progress there was no leader who would give proper direction to the flow of our work. Occasionally we have conflict of issues which deviate us from the actual path of the assignment’s objective. I decided to implement the ideas the Tuckman teamwork theory. It was extremely important for me to make sure that the team go through all the four phases of team development mentioned in this theory (forming, storming norming and performing). I witnessed that initially the group members were finding it difficult to gel in with each other. So I decided to clarify the overall objective of the team in order to make sure that group members work towards a unified goal. This helped me to establish coordination among the team members once they started to feel comfortable within the group (Riebe, et al.,

Management of medical equipment Essay Example | Topics and Well Written Essays - 2250 words - 1

Management of medical equipment - Essay Example The acquisition subcycle is further subdivided into the following phases: technology assessment, technology planning, acquisition, acceptance, and finally replacement and disposal (Chan, 2003). Technology assessment includes the assessment of the technology or in this case the equipment, mostly in relation to its safety and performance, as well as its projected effect in terms of patient outcomes and its impact on the economic and ethical elements of healthcare (Vallejo-Torres, et.al., 2008). Medical technology and equipment are evaluated in general terms and in relation to other technologies, procedures and interventions. The goal of medical technology assessment is to ensure objective as well as quality data which can be used by stakeholders in their decision-making (Vallejo-Torres, et.al., 2008). The general application of the technology assessment is on the assessment of technologies and equipment after they are introduced in the marketplace. Other experts and researchers however are also quick to point out that new technologies must be assessed before they are incorporated into the clinical practice (Pietzsch and Pate-Cornell, 2008). By evaluating the technology and equipment in the soonest possible time, it is possible to improve health outcomes, reduce wrong investments, and prevent possible ethical issues arising from these technologies (Pietzsch and Pate-Cornell, 2008). Technology planning is the next phase in the acquisition subcycle (Dyro, 2004). This planning phase includes an interdisciplinary planning process alongside years of experience in hospital management and construction, ensuring the establishment of functional procedures within the clinical practice (Hospital Technology, 2012). Planning medical technology...Medical technology and equipment are evaluated in general terms and in relation to other technologies, procedures and interventions. Planning medical technology also includes the acquisition of large-scale medical equipment including M RI, CT, PET-CT, and angiographies among others (Hospital Technology, 2012). The acquisition of the technology includes the actual purchase of the equipment itself. The last phase of the acquisition process is the replacement and disposal of the medical equipment. Unreliable equipment is also usually replaced. Where medical equipment is deemed unserviceable, it is also the responsibility of equipment services managers to indicate to the concerned department managers about the need for equipment replacement. Utilisation subcycle The other phase in the medical equipment lifecycle is the utilisation subcycle. Quality assurance is carried out in order to identify defective medical equipment (David, 2003). Utilisation subcycle and clinical governance Where the users of the equipment are properly trained, the risk to the patient and the medical staff is reduced. The training in equipment use would also include how the users can maintain the equipment, and this process usually includes the daily cleaning and maintenance of the equipment (Pardeshi, 2005). Quality assurance processes often involves routine maintenance and routine equipment check by the technicians as well as independent quality assurance agencies (WHO, 2013). Medical equipment management is an important aspect of the efficient delivery of healthcare services.

Reflection 03081 Essay Example | Topics and Well Written Essays - 1000 words

Reflection 03081 - Essay Example The presentation that we gave was about the first industrial revolution. The most important objective was to highlight the noteworthy inventions that were made in this period and what has happened since then. Tasks were assigned to individuals equally in order to ensure successful completion of the project. There was three group members, one was given the task to do the research and collect data, the second group member was reasonable for designing the presentation and I was give the task of writing the slide contents. The following sections will include the interpretation and outcome of our group efforts. As mentioned above, we were tasked with the preparation of a PowerPoint presentation regarding the first industrial revolution. We decided to conduct group meetings every alternative day in the week in order to discuss our individual progress regarding the overall presentation. The division of work was done very effectively as each of us go the work that we do best. However, one of the major drawbacks of our group was that no one was clearly defined as the leader. Although we were making individual progress there was no leader who would give proper direction to the flow of our work. Occasionally we have conflict of issues which deviate us from the actual path of the assignment’s objective. I decided to implement the ideas the Tuckman teamwork theory. It was extremely important for me to make sure that the team go through all the four phases of team development mentioned in this theory (forming, storming norming and performing). I witnessed that initially the group members were finding it difficult to gel in with each other. So I decided to clarify the overall objective of the team in order to make sure that group members work towards a unified goal. This helped me to establish coordination among the team members once they started to feel comfortable within the group (Riebe, et al.,

Retail Marketing Essay Example | Topics and Well Written Essays - 3000 words - 2

Retail Marketing - Essay Example The emergence and popularity of the free trade policies have facilitated the international expansion of the multinational corporations as the free trade policies have multiplied the opportunities in the international market. In case retailing marketing, the international exposures have paved the way for better market expansions and hence many leading retailers like Wal-Mart, Tesco, and Sainsbury etc have entered many international markets with better opportunities. However, many academics believe that from the very early period of business, the retailers used to go for international business. At presented, the entire process of international trade have become more structured and as retailers have started to open their international divisions and units with multiple retailing stores. The multinational retailers have realized that potential opportunities underlying in the international and development market like China, Middle East, India etc. The process of international retailing bec omes a notable instance during late 1990s. With increasing global competition, many scholars perceive that for long term sustainability, retailers must opt for the internationalisation of their business as some of expert retail analytics have commented that â€Å"by the year 2005....retailer will either be global...or they will be gone† (Lamba, 2002, p.06). This paper will also attempt to present a retailer’s international viability through analysis and discussion. Therefore, as a retailer, India’s retail chain group, Shopper’s Stop has been selected as it does not have international business unit. In order to assess its international viability, an internal analysis of this retailer will be conducted using the value chain model. Next, for international exposition, retailer also needs to understand the basics of international retailing. Hence, it is necessary to identify the factors affecting the international retailing and the way to gain the competitive advantages. Moreover, for international retailing expansion, strategic framework must be in according and hence, finally, a set of plausible and relevant recommended strategies will be given followed by a conclusion. 2. Brief Overview about Company: Shopper’s Stop Shopper’s Stop is a popular Indian retail chain and it is primarily India-based retailing company. This retail chain was established on October 07, 1991 and it was founded by the K. Raheja Group of Companies, one of pioneers in hospitality and real estate business. Initially, the retail chain was brand shop and gradually, it a brand store family store for Fashion and Lifestyle. It has experienced a rapid growth in Indian competitive retailing industry and many considered it as â€Å"the highest benchmark for the Indian retail industry†, and moreover, it keeps expanding its business in the domestic market by target the non-catered regional markets (Shoppers Stop Ltd.-a, n.d.). It is an public ltd. Compa ny and listed in the Bombay Stock Exchange. The company aims to be the top retail company in India in department store category with a set of pre-defined

Ethical Issues in Testing and Assessment Essay Example for Free

Ethical Issues in Testing and Assessment Essay Counselling psychology plays an essential role in the life of most individuals nowadays. Even various institutions like schools and corporations also used this field of psychology especially in dealing with their students and employees. Counselling psychology is responsible for conducting various tests and assessments in order to measure the intelligence, personality and other related factors concerning the behaviour of an individual. Nevertheless, ethical issues are often associated with these tests and assessments due to the sensitive cases that are involve in it. A good example is the MMPI that is a kind of personality test. MMPI is a test that is designed to measure the pathological personality traits of an individual. It has been widely recognized and used as a personality assessment technique. The administration of this assessment takes about an hour and a half wherein the individual who would receive this test have to answer a large number of items that would reveal their personality (Butcher Hostetler, 1990). The validity and reliability of the MMPI has been debated. This is due to the fact that some argues that personality is very difficult to measure especially since it often deals with psychological construct. Moreover, ethical issues also become observable when this MMPI is not use for its intended purpose. The main objective of the MMPI is to give substantial result about the personality of an individual but some use it in terms of employment. The result of the MMPI becomes a basis for certain institutions or companies to discriminate individuals from a certain position (A Guide to Psychology and its Practice, n.d. ). This becomes unethical since the MMPI is not similar to employment tests and thus, it does not give reliable results on whether a person should be hired or not for a particular occupation. Furthermore, personality test like the MMPI often fails to recognize that the personality of an individual has a lot to do with its cultural background. The MMPI should not be implemented universally since there should be discretion in using it depending on the type of culture that an individual has. This is essential in order to get reliable results from this personality test. Lastly, ethical issues also exist in the administration and examination of the MMPI. This is due to the fact that psychologists who conduct these tests should not be subjective in interpreting its results. They should also observed confidentiality with regards to the result of such assessment as well as the necessary precaution in taking care of the important documents that concern the individuals whom they administered these tests. References A Guide to Psychology and its Practice. (n. d. ). Psychological Testing. Retrieved August 11, 2008, from http://www. guidetopsychology. com/testing. htm. Butcher, J. N. Hostetler, K. (1990). Abbreviating MMPI Item Administration: What Can Be Learned From the MMPI for the MMPI – 2? Psychological Assessment: A Journal of Consulting and Clinical Psychology. Retrieved August 11, 2008, from http://www1. umn. edu/mmpi/Reprints/Abbreviating%20MMPI%20item%20administration. html.

The History of Electromagnetic Suspension System

The History of Electromagnetic Suspension System As the knees are the important part of the human body because of which he can walk, run, sit and jump properly, the suspension system is a knee of a vehicle, with which the vehicle can give us a comfortable ride. The automobile frame and body are mounted on the front and rear axle not directly but through some form of springs and shock absorbers. This is done to damp to road shocks transmitted to the frame by the wheels as they roll over the road. All these parts which perform this function are together called as a suspension system. Thus the suspension system includes springs, shock absorber and there mountings. The suspension system of a motor vehicle divided into the rear end suspension front end suspension. 1.1 Need of suspension system: To avoid the road shocks which are pass on to the vehicle frame. To preserve the steadiness of a car in pitching or rolling, when in motion. To safeguard the occupant from road shocks. To provide good road holding while driving, cornering and braking. To maintain proper steering geometry. 1.2 Types of suspension systems: The following are the suspension systems which rare used in the modern vehicles, Dry friction or Leaf spring Coil spring Air bag Rubber spring Electromagnetic suspension system 1.3 History of suspension system: Rolls Royce (1913) illustrates that how the different situations was in the early years where rear dampers stopped to use. Dry snubbers were used in between 1910-1925. However, the period 1925-1980 was very extensive by simple hydraulics, primarily simply constant force blow off, then proportional characteristics, then adjustable, leading to mature product. In the period of 1980 to 1985, there was an enthusiasm about the possibilities for the different types of active suspension, and they had the ability to get rid of the ordinary dampers. Then after some period in 1985, the fast auto-adjusting dampers, turn out to be more and more obvious, because they found a good deal profit of active suspension much more cheaply, and from that period the damper unexpectedly became an interesting, developing component again (Dixon John, 2010). In 1966 for high-speed transportation Danby and Powell introduced an EDS system using super conducting magnets with a null flux suspension. After some period some more designs proposed using continues sheet guide ways. Then some from U.S., Japan, Germany, UK and Canada have developed further innovations (such as ladder type guide way for increased lift efficiency), but there are still a number of technical problems that needed resolution. (T. Thompson, Richard D. Thornton and Anthony Kondoleon, 2010) 1.4 Current Details Of Electromagnetic Suspension (Maglev): There are three primary types of Maglev technologies: superconducting magnets ( electrodynamic suspension) feedback controlled electromagnets ( electromagnetic suspension) A new but very cheaper permanent magnet system Inductrack. The several approaches and designs have been produced by Japan and Germany. These two countries are very active in maglev research. The design used for trains in which the train levitate by the repulsive force of the same poles of the magnets. A linear motor is used to propel the train or on the locomotive or both. In this system massive electrical induction coils produce the magnetic field and the need of this magnetic field which is placed along the track is to propel the train, leading some to speculate that the cost of constructing such tracks would be enormous. ( Heller Arnie 2010). Earnshaws theorem states that a collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges. As Earnshaws theorem says Magnetic bearings are unstable; the conventional maglev systems stabilized with the help of the electromagnets which have electronic stabilization. In actual to levitate the train that is to keep the train up in the air with the help of an magnetic field it needs very strong magnetic field which only can generate by a large electromagnet but large electromagnet is also a big issue for the design, so instead of using the large magnets, superconductor for an capable electromagnet. Inductrack is a cheap in cost compare to other systems. The system relies on the current induced in the passive electromagnetic array generated by permanent magnets, so that it provides the better load carrying capacity related to the speed. In the model, the permanent magnets are placed on both sides of the model; the function of these magnets is to provide horizontal lift and vertical stability. There is collection of wire loops in the track which is also called as array. There is no power supply in magnets and the model, apart from the speed of the model. The basic concept behind this system is to store the power by developing the inductrack as a motor and flywheel bearing. With only slight design changes, the bearings were unrolled into a linear track. William Post is the father of such a great innovation like inductrack. He had done this experiment at Lawrence Livermore National Laboratory. (Heller Arnie 2010). Chapter 2 LITERATURE REVIEW 2.1 Principle of Suspension System: The suspension system of an automobile has input force and output as shown in above fig. Fig: 2.1 (Dr. Erping Zhou, 2010) where, M1 is the body mass of the vehicle M2 is the mass of the suspension system K1 is the spring constant for suspension system K is the constant for the tyre (spring). C is the damper constant Y is the input force form the road to the suspension system. Y1 is the input force from suspension system to the body of vehicle. X is the output displacement. So the mathematical diagram of the vehicle is given as: M2 K1(Y1- X)+ C. d(Y1- X)/ dt K2(Y-Y1) Therefore now we can have, K1(Y1- X)+ C. d(Y1- X)/ dt = M1 d2x/dt2(1) And K1(Y1- X)+ C. d(Y1- X)/ dt K2(Y-Y1) = M2 d2Y1/dt2(2) By lapalce theorem, consider d/ dt = S K1(Y1- X)+ C. S(Y1- X) = M1 S2X..(3) K1(Y1- X)+ C. S(Y1- X) K2(Y-Y1) = M2 S2Y1(4) So by solving equation (3) we get the input, K1Y1 K1X + CSY1 CSX = M1S2X X/Y1 = K1 + CS/ (M1S2 + CS + K1) Y1 (INPUT) = X (M1S2 + CS + K1) / K1 + CS (Dr. Erping Zhou, 2010) 2.2 Basic Concept: Take a cylindrical hollow shock absorber frame placing two magnets inside it. In this cylinder the arrangement of the magnets is in such a way, place one magnet at the top of the cylinder with any polarity let us consider south polarity on down side. Then place another magnet at the bottom of the cylinder having south polarity upside so that they can be parallel each other. Then due to the same polarity of both the magnets the repulsive force generates which gives the movement to the shaft to avoid any unwanted shocks and the fixed hydraulic damper absorbs the vibrations and instability. 2.3 Theory of Vibration: Any motion that repeats itself after an interval of time is called vibration or oscillation. The best examples for vibration are pendulum and a plucked string. The theory of vibration explains the study of oscillatory motions. Free vibration without damping To begin with the study of the mass-spring-damper, lets consider the damping is insignificant and the mass is free from any type of force that is called free vibration. Where, k is the constant of stiffness x is the length of stretched spring m is the mass of body So the force is given by, Fs = kx By Newtons second law of motion the generated force is proportional to the acceleration of the mass E F = ma = m.d2x / dt2 Then the sum of the forces on the mass is equals to zero: ma + kx = 0 If the system starts to vibrate by stretching the spring by the distance of A, we get the following equation. x(t) = A cos(2à Ã¢â€š ¬ fnt) The above explanation state that the system oscillates with the simple harmonic motion with an amplitude A , frequency fn. The number fn is called as the undamped frequency which is defined as: fn = To simplify the equation the angular frequency à Ã¢â‚¬ ° (à Ã¢â‚¬ ° = 2à Ã¢â€š ¬f) which has a unit radians per second. If the mass is heavy and inflexibility of the system is known, then the frequency concludes when the force is applied to the system, it will vibrate. When the system once disturbed it vibrates because it has one or more frequencies. The above formula shows the complexity in the real complex designs. (Tustin Wayne 2010) The causes of vibration in the system (conservation of energy) Conservation of energy explains the vibrational motion. In the above example the value of the spring is x and therefore it has stored some potential energy (kx2). Once the spring became free it tries to gain its original shape which has minimum potential energy and in the process accelerates the mass. As the spring reached at its original state that is in unstreched position all the potential energy then converted in to the kinetic energy (mv2). The system then starts to deaccelerate because of the compression of the spring and in this process it transfers kinetic energy into original potential energy. Thus oscillation of the spring transfers the kinetic energy into potential energy. In the above given simple system the mass remains oscillate at the same magnitude, but this doesnt happened in the real system because of the damper which disperse the energy and therefore the system finally bringing it to rest. (Tustin Wayne 2010) Free vibration with damping Now in this system a viscous damper is added to the system which generates an opposive force against the motion of the body which is relative to the velocity of the mass. Where c is the proportionality constant and has units of Force over velocity (N s/m). x m k c Fig: 2.3 (Tustin Wayne 2010) Fd = cv = -c. dx/dt By summing the forces on the mass we get the following ordinary differential equation: ma + cv + kx = 0 The result of the above equation relies on the amount of damping. For the small damping effect the system vibrates but after some time it slows down and finally stops vibrating. This case is called underdamping this case is of most interest in vibration analysis. If the damping effect increases until the last point of the oscillation of the system, the system then goes in to the critical damping. Cc = 2 Is the final critical damping point calue for the mass spring damper model. A damping ration is used to differentiate the amount of damping in a system. The differentiation of the damping is defined as to get a critical point the actual damping divided by the amount of damping. The damping ratio (ÃŽÂ ¶) given as: ÃŽÂ ¶ = c / The values of damping factors for airplane fuselage, engine crankshaft are less than 0.05 and for an automotive suspensions the range of 0.2-0.3. The key for the underdamped system for the mass spring damper model is : x(t) = Xe-ÃŽÂ ¶Ãƒ Ã¢â‚¬ °t cos ( à Ã¢â‚¬ ° = 2à Ã¢â€š ¬f The value of X, the initial magnitude, and à Ã¢â‚¬  , the phase shift, are determined by the amount the spring is stretched. (Tustin Wayne 2010) Analyzation of Damped and undamped natural frequencies The exponential term and the cosine function are the two main points which are noted from the solution. The meaning of exponential term is how quickly the system damps down. The damping effect is low when the damping ration is more. The cosine function explains the oscillations in the system, but the frequency of the oscillations is different from the undamped case. For this case the frequency is called damped natural frequency, fd, and there is a relation between the damped frequency and undamped frequency as follows: Fd = fn Generally, the undamped natural frequency is more than the damped natural frequency, but in realistic the difference between the damped and undamped frequencies is irrelevant because of the damping ratio which is moderately small. Therefore at the starting phase of natural frequency the damped and undamped description are frequently dropped.for example- when the damping ratio is 0.1, the damped natural frequency is only 1% less than the undamped. The two damping ratios 0.1 and 0.3 for the design of side shows how they affect the system and also they show how the system takes time to be stable. Also they show, most frequently what happened practically, is to calculate the free vibrations by doing some experiments after an impact on the system and then the system oscillates so by measuring the rate of oscillations conclude the natural frequency of the system as well as the ratio of damping with the help of rate of decay. Natural frequency and the damping ratio are the important factors in free vibrations but to understand and differentiate the behaviour of the system in different vibrations generated by force is also important. (Tustin Wayne 2010) 2.4 Principle of EMSS: The basic principle is to build up a contact less spring; the electromagnetic actuators can absorb the instability. The basics in electromagnetic suspension are the opposite polarity of the magnets facing each other absorbs all the bumps. The major difficulty is making the magnets physically powerful when running off a cars electrical system. 2.5 Halbach Arrays: Halbach cylinders are well-suited to magnetic levitation of gyroscope, motor and generator spindles. In these cylinders only permanent magnets and unpowered conductors are used to provide levitation. Rotational motion provides the energy of suspension entirely, efficiency is good, and there is no need of extremely low temperature suspension magnets or electronics. But there is a limit for the linear speed at the bearing race which must be above a meter per second to levitate. The inductrack maglev train system uses this principle as well, which avoids the problems inherent in actively supported systems. Halbach Cylinder: K = 1 K = 2 K = 3 K = 4A magnetized cylinder which is made up of a ferromagnetic material producing a magnetic field restricted completely inside the cylinder and doesnt produce any fields outside is called Halbach Cylinder. The Halbach Cylinders can also generate the magnetic field completely outside of the cylinder and then again it doesnt produce any fields inside the cylinder. Some magnetization distributions are shown below: Fig: 2.4 magnetization distributions( K. Halbach, J.C. Mallinson, Raich, H., Blà ¼mler 2010) The direction of magnetization within the ferromagnetic material is given by M = Mr { sin (kà Ã¢â‚¬ ¢)à °Ã‚ Ã‚ Ã¢â‚¬   cos (kà Ã¢â‚¬ ¢) à Ã¢â‚¬ ¢} Where, Mr is the magnetic remanance (T/m). +k is an internal magnetic field and -k is an external magnetic field. Preferably, the structures of these types of cylinders would be formed by an unlimited length cylinder of magnetic material which has the direction of magnetization constantly changing. These types of ideal designed cylinder produce the magnetic flux which is perfectly uniform and entirely confined to the bore of the cylinder. But in real case the infinite length of the cylinders cannot be used and in practice the limited length of the cylinders creates end effects which show the non-uniformities in the field within the bore. The complexity of developed a cylinder with a constantly changing magnetization also frequently directs to the design being broken into sections. ( K. Halbach, J.C. Mallinson, Raich, H., Blà ¼mler 2010) 2.6 Magnetic Material: Magnets have the basic property of attraction towards, or repulsion by other materials. A material with high permeability attracted strongly towards a magnet. There are two main examples of materials with very high permeability those are Iron and steel which powerfully attracted to magnets. Liquefied O2 is in fact slightly repelled by magnetic fields because it has very low permeability. People, gases and the vacuum of outer space has quantifiable permeability. The SI unit of magnetic field strength is the tesla, SI unit of total magnetic flux is the Weber. 1 Weber = 1 tesla following through 1 square meter, and is a very large amount of magnetic flux. Neodymium magnet: A neodymium magnet or NIB magnet which is also called as a rare earth magnet which is a good strength of attraction and repulsion, made of a combination of neodymium, iron and boron -Nd2Fe14B. Neodymium magnet on a bracket from a hard drive (PengCheng magnets Ltd., 2010) NIB magnets are comparatively very strong to their mass, they are mechanically brittle and the most powerful results to lose their magnetism at temperatures above 176 degrees fahrenheit or 80 degrees Celsius. In some cases they there strength is slightly more than samarium-cobalt like high-temperature grades will operate at up to 200 and even 230  °C. The neodymium magnet industry is constantly working to push the maximum energy product (strength) closer to the theoretical maximum of 64MGOe. A neodymium magnet has a capability to lift 1300 times more than its own mass. The small magnet have some remarkable properties it exhibits magnetic braking when moved near a non-magnetic metal due to induced eddy currents. (http://www.statemaster.com/encyclopedia/Neodymium-magnet, 2010) 2.7 Summery: The system mainly based on the repulsion of the two similar polarities of the two different magnets. The two damped and undamped systems gives the different vibration frequencies. The analyzation shows a major difference between damped and undamped system. The Halbach array stabilize the repulsive effect is to use field that move in space rather than just time. This effect can demonstrate with a rotating conductive disc and a permanent magnet, which will repel each other. A neodymium magnet or NIB is a powerfull magnet made up of a combination of neodymium, iron and boron- Nd2Fe14B is used in EMSS. Chapter 3 MAGLEV DESIGN 3.1 Electromagnetic Suspension System: (Concept) The design of the electromagnetic suspension system can be done with two types: 1) By using a Hydraulic Damper or 2) By using Linear Motor as a Damper. The concept is to design the magnetic suspension system on the front shock absorber of the motor bike to have a better performance with ease of handling and comfort ride. There are two cylinders installed on two separate arms of the front shock absorbing rods. The cylinder contains the pair of the cylindrical magnets having same pole facing each other to create the required repulsive force to have required levitation effect. The two cylindrical magnets having S (South Pole) on the outer surface concentric with the inner circle having N (North Pole) as shown in following figure:- 1) Working for the Hydraulic Damper: The two magnets are in a cylinder on a shaft, as seen in above figure comprise our required magnet for a motor bike front suspension system. In the fig. it shows the magnets are placed such as they are facing each other but with the same polarity, hence they repel each other according to the properties of magnets generate an air gap between them. The repulsive force restores displacement towards each other, and displacement away is restored by gravity. A hydraulic damper is fixed on the top of the cylinder and connected with the upper magnet with a shaft. The set of shocks used with magnets inside them that are used as the fork setup. In this cylinder the arrangement of the magnets is in such a way, place one magnet at the top of the cylinder with any polarity let us consider south polarity on down side. Then place another magnet at the bottom of the cylinder having south polarity upside so that they can be parallel each other. Then due to the same polarity of both the magnets the r epulsive force generates which gives the movement to the shaft to avoid any unwanted shocks and the fixed hydraulic damper absorbs the vibrations and instability. The shaft controlled the radial instability, the repelling force and the gravity force. The spring has a property to contract and extend but it cannot be stable, so the shaft is use to stabilize the spring. If the magnets are placed in two orthogonal axes, they repel each other but not in any one direction, so they are also instable. A thrust bearing can use to avoid the instability in which the magnets can be placed, and even if the instability take place the movable magnet will not fly has the advantage in that if instability does occur, the unstable magnet will not fly unpredictably away from the fixed magnet. The vibrations and the instability will be absorbed by the hydraulic damper. It is stated for completeness that the magnet has two poles North South. They will be attract each other if they are facing each other with different polarity, but they will repel each other if they are facing each other with same polarity.That these forces occur is very well known, but the mechanisms that create these forces are beyond the scope of this document. There are several materials of which permanent magnets may be made. 2) Working of Linear Motor as a Damper: A linear electromagnetic motor works in the straight line instead of work in rotary motion. The movement effect of this motor is very quick. L.E.M. can be used at each wheel in a vehicle which has a conventional shock and spring setup. The L.E.M. can extend as it faces any distraction like pothole and retract as it faces any bump just in milliseconds which is much greater speed than a hydraulic damper. These type of quicker retract and extract movement provides the steering stability by controlling the wheels with respect to the body of the vehicle. The L.E.M. made up of magnets and coils of wires. When current is passed through the coils, the motor retracts and extends so fastly, control unwanted movements. The speed is the major key benefit of the electromagnet. (Bose Elecromagnetic Suspension System, 2010) Fig: 3.2 (Bose Elecromagnetic Suspension System, 2010) The L.E.M. is designed in such a way so that it can give the quick respond to absorb the effects of bumps and pothols and also provides a relaxed ride. Moreover, the motor is designed such as it can supply the maximum power in a small package, which allows it to supply sufficient force to avoid the car from rolling and pitching during bad driving. At the time of acceleration, braking and cornering the L.E.M. neutralize the body motion of a car, which gives the driver a kind of driving idea and passengers comfort ride. For the smooth ride purpose, the wheel dampers are place in each wheel hub to smooth out small road imperfectionst. To generate more power an amplifier is provided which supplies the a great power to the L.E.M.s. The amplifier is a regenerative design that uses the compression force to send power back through the amplifier. (Bose Elecromagnetic Suspension System, 2010) 3.2 Goals of the magnetic design The design of the magnetic spring has the following requirements: 1. Freedom instability by one degree: In freedom instability by on degree generally the stability performance which is forecast by the non linear study is according to the formly build up linearized study. The study of freedom instability by on degree shows the relation between magnitude and velocity. As the velocity increases the magnitude increases which is increased by the stable limit cycle amplitude of vibration. Actuators are essential for stability control of every unbalanced axis. Hence the amount of unstable degrees of freedom needs to reduce. In addition to it for well organized passive vertical load bearing the direction of the unstable direction must be horizontal. 2. Ability to support large loads: Permanent magnets must be maintained on the entire weight of table plus equipment. This weight which is hold up by the electromagnets utilizes considerable amount of power which is unwanted for cost and heat reasons. 3. Effective electromagnet actuator placing: The forces which are applied asymmetrically by the actuators who apply a moment on the levitating table which would be unwanted. For rejecting vertical disturbances the electromagnet actuators must be used for the stabilizing of unstable axis. (S. J. Price and N. R. Valerio) Chapter 4 TECHNOLOGY There are three primary types of MAGLEV Technologies: One that relies on feedback controlled electromagnets (Electromagnetic Suspension or EMS). Ex.: Transrapid The another one relies on the superconducting magnets (Electrodynamic Suspension or EDS) Ex.: JR-Maglev And the last one and newer , potentially more economical system that uses premagnets i.e. Inductrack 4.1 Inductrack: A newer, perhaps less expensive system is called Inductrack. The technique used in inductrack has a load carrying capacity which is related to the speed of the vehicle, because the permanent magnets induce current in the passive electromagnetic array In the model, the permanent magnets are placed on both sides of the model; the function of these magnets is to provide horizontal lift and vertical stability. There is collection of wire loops in the track which is also called as array. There is no power supply in magnets and the model, apart from the speed of the model. The basic concept behind this system is to store the power by developing the inductrack as a motor and flywheel bearing. With only slight design changes, the bearings were unrolled into a linear track. William Post is the father of such a great innovation like inductrack. He had done this experiment at Lawrence Livermore National Laboratory. Inductrack uses Halbach arrays for stabilization. Halbach arrays are the system in which there are some arrangements of permanent magnets which stabilize moving loops of wires without electronic stabilization. Halbach arrays were initially developed for beam guidance of particle accelerators. They also have a magnetic field on the track side only, thus reducing any potential effects on the passengers. 4.2 Lift and Propulsion: In the whole world Japan and Germany are the most active in Maglev research; they have produced several difference approaches and designs. The technique used such as the train can be levitated by the repulsive of like poles or the attractive force of opposite poles of magnets. A linear motor propelled the train which is on the track or on the train, or both. In order togenerate the magnetic field which is necessary to propel the train there are massive electrical induction coils are placed along the track.(C.A. Guderjahn S.L. Wipf,2010) 4.3 Stability: Earnshaws theorem states that a collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges. In the system the static magnetic bearing which uses only electromagnets and premagnets are unstable because of Earnshaws theorem; but the diamagnetic and superconducting magnets can support a Maglev steadily. Some conventional Maglev systems the electromagnets having electronic stability are used for stabilization. This works by constantly measuring the bearing distance and adjusting the electromagnets accordingly. 4.4 Magnet Weight The weight of large electromagnet is a major design issue. A very strong magnetic field is required to levitate the massive train, so conventional Maglev research is using superconductor research for an efficient electromagnet. Chapter 5 ANALYSIS 5.1 Dynamics of the magnetic suspension system: The basic principle of a simple electromagnetic suspension system is shown in Fig.1. the current I which is passes through the electromagnet generates the magnetic force Fm which acts opposite to the gravity and cause a steel ball to levitated position. The force relies on the current I, electromagnet properties and the air gap between the steel ball and the electromagnet.The motion of the steel ball in the magnetic field is expressed as G Fm = m d2X / dt2..(1) Where, m = the mass of the suspended steel ball, G = mg, the gravity force, X = the air gap between the steel ball and the electromagnet. The magnetic force Fm is a nonlinear function of the current I and the air gap X. The linearization of the static characteristic near the set point (F0 , X0 ,I0) is given as F = F0 + [I0 (X X0) + ]X0 (I I0).(2) The voltage equation of the electromagnetic coil is expressed as U = RI + L dI / dt.(3) Where, U = the voltage, R = the coil resistance, and L = the inductance. Inductance L=f (X, t) is a function of the air gap, the coil, the core, and the steel ball. The magnetic force which is generated by the electromagnet maintained the steady state air gap between the ball and the electromagnet is manipulated to balance the gravitational force of the ball. The small differences from the operating point are normalized over operating spaces (G, D, Imax , Umax) and they are defined as follows: f = , x= , i = , u = (4) Where, f i= the normalized resultant force, x = the normalized air gap, i = the ormalized current, and u = the normalized voltage. X^ , I^ , and U^ = the steady-state values. Substituting Eq. 4 into Eqs. 1, 2, and 3 the dynamics of the system can be presented as follows: f = -m d2x / dt2 = -m d2x / dt2 = d2x / dt2..(5) f = ]I0 x + ]X0 i , (6) u = i + (7) Let the set gains and time constants be Ke = ]X0 , Km = ]I0 , Te = , Tm = .(8) Therefore Eqs. 5, 6, and 7 can be rewritten as f = T2m d2x / dt2 ..(9) f = Kmx + Kei (10) u = i + Te .. (11) (M. Golob Boris Tovornik, 2010) The block diagram of the linearized model of the electromagnetic suspension system is shown in Fig. 5.2. The linear system described in the block diagram in Fig. 5.2 is unstable and controllable. As per the theory of vibration, there are two types of analysis, 1) The analysis of the Instability and the Vibration without damper and 2) The analysis of the Instability and Vibration with damper. These analyses were made in the electronic lab with help of the METLAB Software. For these two setups the two types of simulations were made in METLAB Software. The data used for the analysis is as follows: Table 3:Nominal System Parameters: Mass of the steel ball (m) 0.147 kg Maximum air gap (D) 0.025 m Number of coils (n) 1200 Coil re

Product Liability Essay -- essays research papers fc

In this age of endless lawsuits and litigation from everyone suing everyone else, one must ask the question â€Å"where does product liability end and consumer responsibility begin?† This question has been further complicated by occurrences that stretch to the most far-reaching ends of this spectrum, the spectrum ranging from strict product liability of the company to complete consumer responsibility. On the strict product liability of the company side, we have the cigarette industry where the CEOs of the largest cigarette companies denied that their product was liable for the cause of addiction. Almost all consumers know that the ingredient nicotine in cigarettes is addictive, due to extensive scientific testing and reports on this fact. What these CEO’s should have done was admit that they knew nicotine was addictive, and therefore made their product liable so as to give a fair warning to unknowing consumers. On the complete consumer responsibility side, we can exami ne the lawsuit where a man sued McDonald’s for over a million dollars because he spilled a cup of their coffee on his self and suffered burns. He claimed that McDonald’s was liable because there was not a warning on the lid that stated that the coffee was hot. In my opinion, this lawsuit should have never happened. The consumer is attempting to alleviate all of the responsibility from himself for spilling his coffee and pass it on to the producer of the product. Frivolous lawsuits such as this, as well as companies failing to consider the importance of product liability, have resulted in an increasing annual product liability bill. Last year alone $4 billion was spent on product liability lawsuits and settlements (McAdams, p.636). This staggering number suggests that maybe we need to reform our liability system. Ideally, we as a society would like to reach a happy medium between strict product liability of the company and complete consumer responsibility. If this occur red, lawsuits such as this would no longer drain our legal systems because an understanding would exist that the responsibility rests equally in both parties’ hands. However, that is an ideal situation, which rarely ever occurs in the real world. In the real world, tradeoffs must be made in order to reach equilibrium. These tradeoffs between strict product liability and consumer responsibility will be discussed in light of the situati... ...g to act, but just a little common sense should tell you that releasing a movie with the content such as Boyz N the Hood and only focusing on its negative themes will send the wrong message, especially in metro areas where crimes and gangs are prevalent.   Ã‚  Ã‚  Ã‚  Ã‚  In an ideal world, consumers and companies would equally share the burdens of product liability and consumer responsibility. However, in the real world, we must make tradeoffs between these two. How we do this will not only affect our legal environment, but our economic and social environments as well. Works Cited Anonymous, Industrial Distribution, New York, April 2000, Volume 89, issue 4, p.36. Brostoff, Steven, National Underwriter, Chicago, September 2000, volume 104, issue 38,   Ã‚  Ã‚  Ã‚  Ã‚  p.2 Eckert, Stephen, Marketing News, Chicago, April 2000, Volume 34, issue 9, p. 49. Giliberti, Frank, Marketing Management, Chicago, Winter 1999, Volume 8, issue 4, pp. 53-54. Lamnetti, David, The Business Lawyer, Chicago, February 2000, Volume 55, issue 2, p. 799. McAdams, Tony, Law, Business, and Society, Irwin/McGraw-Hill, New York, 2001, Sixth Edition, p. 636.

Bio 111: Ch. 1 Quiz

o/ > Chapter 01 Quiz Started onSaturday, September 8, 2012, 05:46 PM Completed onSaturday, September 8, 2012, 05:57 PM Time taken11 mins 17 secs Grade9. 00 out of a maximum of 10. 00 (90%) Question 1 Correct Mark 1. 00 out of 1. 00 Flag question Question text Many insects do not see into the red color-range and as a result, many insect-pollinated flowers are colors other than red (e. g. , purple and yellow). This flower coloration would be considered a Select one: a. adaptation. b. gene. c. DNA. d. evolution. e. natural selection. Feedback The correct answer is: adaptation.. Question 2 Correct Mark 1. 0 out of 1. 00 Flag question Question text Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a bird eats the spider. How many populations are included in his study? Select one: a. 2 b. 0 c. 3 d. 1 e. 4 Feedback The correct answer is: 3. Question 3 Correct Mark 1. 00 out of 1. 00 Flag question Question text The p rocess of _____________________ transforms solar energy into chemical energy. Select one: a. homeostasis b. metabolism c. photosynthesis d. reproduction e. respiration Feedback The correct answer is: photosynthesis. Question 4Correct Mark 1. 00 out of 1. 00 Flag question Question text In science, a theory Select one: a. cannot be tested. b. is held to be an absolutely correct answer to a question. c. encompasses many hypotheses. d. is tested by an experiment. e. is more narrow in scope than a hypothesis. Feedback The correct answer is: encompasses many hypotheses.. Question 5 Correct Mark 1. 00 out of 1. 00 Flag question Question text A pond ecosystem includes small water fleas which feed on submerged aquatic plants. When the water fleas die, they sink to the bottom of the pond and where they decompose with the help of bacteria.List in order the producer, decomposer, and consumer in this system. Select one: a. bacterial, aquatic plants, water fleas b. aquatic plants, bacteria, water fleas c. aquatic plants, water fleas, bacteria d. water fleas, bacteria, aquatic plants e. bacteria, water fleas, aquatic plants Feedback The correct answer is: aquatic plants, bacteria, water fleas. Question 6 Correct Mark 1. 00 out of 1. 00 Flag question Question text The various species of honeycreepers have an assortment of different bills, but all species have a similar size and body shape. This is an example of Select one: . descent with modification. b. adaptations. c. DNA. d. taxonomy. e. homeostasis. Feedback The correct answer is: descent with modification.. Question 7 Correct Mark 1. 00 out of 1. 00 Flag question Question text Populations of amphibians, including frogs and toads, have been plagued by disease and high rates of deformity. A recent study investigated whether problems among the populations have arisen due to poisons from chemicals associated with agriculture. Biologists from the University of Florida collected local adult cane toads (Bufomarinus) from more t han 20 different locations.Toads were collected from areas close to agriculture; both large-scale and small-scale farms as well as from suburbs. At collection sites where 50-97% of the adjacent land was farmed, males showed high levels of feminization. Feminized male toads were similar in color to females and had lower levels of testosterone and often also deformed gonads. These changes can lead to sterile males or changes in behavior that prevent mating from occurring. In this study, what is the genus of the study animal? Select one: a. cane toad b. Bufomarinus c. marinus d. amphibian e. Bufo Feedback The correct answer is: Bufo. Question 8Correct Mark 1. 00 out of 1. 00 Flag question Question text Domain _______________ includes both unicellular and multicellular organisms. Select one: a. Eukarya b. Plantae c. Bacteria d. Fungi e. Protista Feedback The correct answer is: Eukarya. Question 9 Correct Mark 1. 00 out of 1. 00 Flag question Question text The smallest unit of life is a Select one: a. specie. b. tissue. c. organism. d. cell. e. organ. Feedback The correct answer is: cell.. Question 10 Incorrect Mark 0. 00 out of 1. 00 Flag question Question text Which of the following terms is not correctly matched with a correct example? Select one: a. mosquito feeding on a human host – community b. a rock garden with various plants and rocks of different sizes – ecosystem c. a spider – organism d. a herd of wildebeest – population e. a tropical rainforest – community Feedback The correct answer is: a tropical rainforest – community. Finish review Skip Quiz navigation Quiz navigation Question 1 This page Question 2 This page Question 3 This page Question 4 This page Question 5 This page Question 6 This page Question 7 This page Question 8 This page Question 9 This page Question 10 This page Finish review You are logged in as Moore Sarah (Logout) 2012FA-BIO-111-IX7