A river descends 15 m through rapids. The speed of the water is 3.2 m/s upon entering

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A river descends 15 m through rapids. The speed of the water is 3.2 m/s upon entering the rapids and 13 m/s upon leaving. What percentage of the gravitational potential energy of the water-Earth system is transferred to kinetic energy during the descent? Discuss.
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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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