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Unformatted text preview: lai (yl8859) HW11 Ross (15200) 1 This printout should have 6 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points Water flows over Victoria Falls, which is 128 m high, at an average rate of 1 . 56 10 6 kg/s. The acceleration of gravity is 9 . 81 m / s 2 . If half the potential energy of this water were converted into electric energy, how much power would be produced by these falls? Correct answer: 979 . 43 MW. Explanation: Let : m t = 1 . 56 10 6 kg / s , h = 128 m m , and g = 9 . 81 m / s 2 . P = W t = U t = 1 2 ( mg h ) t = 1 2 g h m t = 1 2 (9 . 81 m / s 2 ) ( 128 m) (1 . 56 10 6 kg / s) MW 10 6 W = 979 . 43 MW . 002 (part 1 of 2) 10.0 points A bead slides without friction around a loop theloop. The bead is released from a height 9 m from the bottom of the looptheloop which has a radius 3 m....
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This note was uploaded on 02/24/2011 for the course PHYS 152 taught by Professor Button during the Winter '08 term at IUPUI.
 Winter '08
 BUTTON
 mechanics

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