posted by Melissa .
Water flows (v = approx 0) over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.
Express your answer using two significant figures. P = W ??
Power out = (efficiency)*(mass flow rate)*(potential energy loss per mass)
= 0.53*(660 kg/s)*(9.8 m/s^2)*(86 m)
The answer will be in Watts