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Unformatted text preview: ortiz (lno236) Homework 1 Weathers (17101) 1 This printout should have 9 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points The mass of the planet Saturn is about 5 . 64 10 26 kg and its radius 6 10 7 m. Calculate its density. Correct answer: 623 . 357 kg / m 3 . Explanation: Let : M = 5 . 64 10 26 kg and R = 6 10 7 m . Assuming Saturn to be a sphere (neglecting the rings), V = 4 3 R 3 , so the density of Saturn is = M V = M 4 3 R 3 = 3 (5 . 64 10 26 kg) 4 (6 10 7 m) 3 = 623 . 357 kg / m 3 . 002 10.0 points A rope has a cross section A = 8 . 83 m 2 and density = 2310 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. = A 2 3. = A 4. = 1 A 2 5. = A 6. = A correct 7. = A 2 8. = A 2 9. = A 2 2 10. = 1 A Explanation: [ x ] means the units of x ....
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This note was uploaded on 10/31/2010 for the course PHYSICS 1710 taught by Professor Weathers during the Fall '10 term at North Texas.
 Fall '10
 Weathers
 Mass, Work

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