Question

Water flows over a section of Niagara Falls at a rate of 1.2×106 kg/ s and falls 50m. How many 60W bulbs can be lit with this power?
And what efficiency do you assume for 1)the turbine, and 2) the electrical generator?

Let efficiency be E.

Power output= massflowrate*g*50m*E

Now, divide that by 60 to find the number of 60w bulbs.

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