A dam is used to block the passage of a river and to generate electricity. Approximately
of water
fall each second through a height of 19.6 m. If one half of the gravitational potential energy of the water were
converted to electrical energy, how much power would be generated?
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Explanation:
power= PE rate*efficiency
= 58.4kg/s *9.8m/s^2*20.1m*1/2
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