Suppose the dam is 80% efficient at converting the water’s potential energy to electrical energy. How many kilograms of water must pass through the turbines each second to generate 45.0 MWMW of electricity? This is a typical value for a small hydroelectric dam.

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Answer:Explanation:Let assume that the water dam has a fall of 35 meters. The required instantaneous potential energy is:

The instantaneous potential energy has the following model:

The mass flow rate needed to produced the required energy production: