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Please help with the solution to the following question. Please include all units in each step. 7. In a pumped hydro facility, 10 7 m

Please help with the solution to the following question. Please include all units in each step.

7. In a pumped hydro facility, 10⁷ m³ of water are pumped from sea level to a reservoir 200 m higher.

A. How many kWh of energy are required if the pump has 95% efficiency?

B. The water is returned and the energy recovered with 85% efficiency. How fast must the water be returned (in m³/s) if a power level of 100 MW is to be maintained?

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