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Unformatted text preview: Overton, Mays Oldquiz 5 Due: May 10 2005, 9:00 am Inst: Turner 1 This printout should have 35 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points Needing help, the secretary of the United States Department of Agriculture asked your teacher, If a chickenandahalf can lay an eggandahalf in a dayandahalf, how many days will it take two chickens to lay eight eggs? Please help your teacher select the correct answer to the secretarys question. 1. Two chickens will lay eight eggs in twenty one days. 2. Two chickens will lay eight eggs in four teen days. 3. Two chickens will lay eight eggs in twenty four days. 4. Two chickens will lay eight eggs in sixteen days. 5. Two chickens will lay eight eggs in twenty two days. 6. Two chickens will lay eight eggs in eigh teen days. 7. Two chickens will lay eight eggs in ten days. 8. Two chickens will lay eight eggs in twelve days. 9. Two chickens will lay eight eggs in six days. correct 10. Two chickens will lay eight eggs in fifteen days. Explanation: Basic Concept: The information given in the question is the rate of egg production in one instance and you must make this rate compatible with another instance. The rate of egg production is constant. The number of eggs per chicken per day is a constant. Solution: Since it takes a chickenandahalf a dayandahalf to lay an eggandahalf, it will take one chicken oneandahalf days to lay one egg. Therefore, to lay eight eggs it will take two chickens six days. Alternative Method: Unit analysis is basic to every physics problem and is central to this problem. The rate of egg production is the number of eggs produced per chicken per day. In the given instance the rate is rate = { 3 / 2 eggs } { 3 / 2 chickens }{ 3 / 2 days } = 2 3 eggs chickens days . (1) In the requested instance, the number of chickens is (2 chickens) and the number of eggs is (8 eggs). The number of days N is to be determined. Therefore in the requested instance, the rate is rate = { 8 eggs } { 2 chickens }{N} . (2) The rate is constant, so equating the rates Eqs. (1) and (2), we have 2 eggs 3 chicken days = 8 eggs 2 chickens N Solving for the number of days N , we have N = 8 eggs 2 chickens 3 chickens days 2 eggs = 6 days . The correct answer: Two chickens will lay eight eggs in six days. Note: The early chicken catches the worm. 002 (part 1 of 1) 10 points Overton, Mays Oldquiz 5 Due: May 10 2005, 9:00 am Inst: Turner 2 A graph of a straight line going through two points is shown below. y 5 3 1 0 1 2 3 4 5 x 5 4 3 2 1 1 2 3 4 5 What is the equation y = f ( x ) of this line?...
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This note was uploaded on 03/20/2008 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas at Austin.
 Spring '08
 Turner
 Physics

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