HW 2-solutions - virani (sv2339) HW 2 moura (58650) 1 This...

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Unformatted text preview: virani (sv2339) HW 2 moura (58650) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A basketball player is 6 ft 9 1 4 in tall. What is his height in centimeters? Correct answer: 206 . 375 cm. Explanation: We can convert to inches and then to cen- timeters: 6 ft 9 1 4 in = parenleftbigg 6 ft 12 in 1 ft + 9 . 25 in parenrightbigg 2 . 54 cm 1 in = 206 . 375 cm . 002 10.0 points This problem shows how dimensional analysis helps us check our work and sometimes even help us find a formula. A rope has a cross section A = 10 m 2 and density = 2010 kg / m 3 . The linear density of the rope , is defined to be the mass per unit length, in the form = x A y . Based on dimensional analysis, find the powers x and y . 1. x =- 2 ,y = 2 2. x = 1 ,y =- 1 3. x =- 1 ,y =- 1 4. x = 1 ,y = 2 5. x =- 1 ,y = 2 6. x =- 2 ,y = 1 7. x =- 2 ,y =- 1 8. x = 1 ,y = 1 correct 9. x =- 1 ,y = 1 Explanation: Kilogram (kg): a unit of mass ( M )....
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This note was uploaded on 11/12/2009 for the course PS 303 taught by Professor Modi during the Spring '08 term at University of Texas at Austin.

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HW 2-solutions - virani (sv2339) HW 2 moura (58650) 1 This...

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