Question

Water flows over hulugan falls, which is 70 high, at an average rate of 2.3 x 10^5 kg/s. If half the po­tential energy of this water were converted into electric en­ergy, how much power would be produced by these falls

Answer 1

$$P=\frac{mgh}{t}\\P=(2.3\cdot10^5)(9.8)(70)=1.6\cdot10^8\ W$$