Kinetic energy, potential energy, work, and power

creelaw
timer Asked: Mar 3rd, 2015

Question Description

At certain times the demand for electric energy is low and electric energy is used to pump water to a reservoir 45 m above the ground and then used to drive turbines during high demand periods.  If this process is 70% efficient, how much water must be raised to produce 150 MW of power for 3 hours?

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