In a hydroelectric dam, water falls 27.0 m and then spins a turbine to generate electricity. You may want to review (Pages 234 - 238) .
Part A What is ΔU of 1.0 kg of water? Express your answer with the appropriate units.
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 54.0 MW of electricity? This is a typical value for a small hydroelectric dam.