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How much coal has to be burned to light

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Reference no: EM132078976

How many joules of energy are required to run a 100 W light bulb for one day? Burning coal yields about 30 . 106 J of energy per kg of coal burned. Assuming that the coal power plant is 30% efficient, how much coal has to be burned to light that light bulb for one day?

Reference no: EM132078976

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