# A hydroelectric power plant use spinning turbines to transform the kinetic energy of moving water into electric energy with 82 %efficiency?

That is, 82 % of the kinetic energy becomes electric energy. A small hydroelectric plant at the base of a dam generates 50 MW of electric power when the falling water has a speed of 18 m/s. What is the water flow rate − kilograms of water per second − through the turbines?

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