Physicshard · Past Paper
Water is falling from a waterfall at the rate of 100 kg/s on the blades of a turbine. If the height of the fall is 100 m, the power delivered to the turbine is (g=10):
A100 kW
B1000 kW
C10 kW
D1 kW
✓ Correct Answer: A — 100 kW
Power = (m/t)gh = 100 kg/s * 10 * 100 = 100,000 W = 100 kW.
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