EXAM_2_–_Fall2011_Practice_Sol[1]

What should the minimum coefficient of friction be so

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Unformatted text preview: s correct about the work done by the external agent? A) The work done is negative. B) The work done is positive. C) The work done in this case is zero because the proton and the electron will spontaneously come close to each other even without any external force. D) None of the above. Problem 5. A car is about to make a turn at v=3m/s such that the radius of the kissing circle at the turn is 10m. What should the minimum coefficient of friction be so that the car does not slip on the road? A) 0.09 B) 0.04 C) 0.15 D) 0.5 E) One must know the mass of the car to answer the question. Problem 6. 110 grams of boiling...
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This document was uploaded on 03/25/2014 for the course PHYS 172 at Purdue University-West Lafayette.

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