A river descends 15 m through rapids. The speed of the
Chapter , Problem 123(choose chapter or problem)
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 waterEarth system is transferred to kinetic energy during the descent? (Hint: Consider the descent of, say, 10 kg of water.)
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