Water is at rest at the bottom of a well of depth h 782 m, Ask an Expert

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Water is at rest at the bottom of a well of depth h = 7.82 m. A pump lifts mass at a rate of dm/dt = 119 kg/minute from the well and ejects it with a speed v = 3.74. m/s. If there is no friction anywhere, find P, the power (energy per time) needed to do this work.

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