Homework Help: Physics

Posted by Anonymous on Thursday, June 30, 2011 at 5:37am.

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?

Physics - Anonymous, Thursday, June 30, 2011 at 9:26am
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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