Each second, 1200 m3 of water passes over a waterfall 100 m high. assuming that three-fourths of the kinetic energy gained by the water in falling is converted to electrical energy by a hydroelectric generator, what is the power output of the generator? (note that 1 m3 of water has a mass of 1000 kg).
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Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational
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Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
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Each second, 1200 m3 of water passes over a waterfall 100 m high. assuming that three-fourths of the...
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