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Unformatted text preview: kveton (ajk643) hw1 morrison (60620) 1 This printout should have 20 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points This problem shows how dimensional analysis helps us check and sometimes even find a formula. A rope has a cross section A = 10 m 2 and density = 2040 kg / m 3 . The linear density of the rope , defined to be the mass per unit length, can be written in the form = x A y . Based on dimensional analysis, determine the powers x and y by choosing an expression below. 1. = A 2 2. = 1 A 3. = A 4. = 1 A 2 5. = A 2 2 6. = A 7. = A 2 8. = A 2 9. = A 2 10. = A 002 10.0 points The volume of an object is given as a function of time by V = A + B t + C t 4 . Determine the dimension of the constant C. 1. L/T 4 2. L 3 /T 4 3. L 4 /T 3 4. L/T 5. L 2 /T 4 003 10.0 points A metric ton is 1 . 000 10 3 kg. How many 82 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton? Answer in units of people. 004 (part 1 of 2) 10.0 points The Statue of Liberty weighs nearly 205 tons. If a person can pull an average of 80 kg / person, how many people would it take to move the Statue of Liberty? Answer in units of people....
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 Fall '08
 FISCHLER
 Physics

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