Water falls down a 500.0 m shaft to reac...

Water falls down a `500.0` m shaft to reach a turbine which generates electricity. How much water must fall per second in order to generate `1.00 xx10^(9)` Watts of power? (Assume `50%` efficiency of conversion and `g=10m//s^(2)`)

`250m^(3)`

`400m^(3)`

`500m^(3)`

`200m^(3)`

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