A total of 100000 kg of water per second flows over a waterfall 30 m high. If half of the power this flow represents could be converted into electricity, how many 100 watt lightbulbs could be supplied?

Answer 1

0.5mgh/t=0.5•10⁵•9.8•30=1.47•10⁷ W
N= 1.47•10⁷/100=1.47•10⁵

Answer 2

5.5