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OpenStudy (anonymous):

Burning coal yields about 30E6 J of energy per kg of coal burned. Assuming that the coal power plant is 30% efficient, how many kg coal has to be burned to light that light bulb for one day?

OpenStudy (anonymous):

I'm having issues solving this problem as well

OpenStudy (anonymous):

"that light bulb"? You need to have a better idea of the amount of energy that needs to be produced.

OpenStudy (anonymous):

That light bulb was 8.46E6 Joules per day

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