# Physics

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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?

• Physics -

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

• Physics -

5.5

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