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20 June, 21:57

Heat engine uses thermal energy flowing from a heat source that is 225 K to a cold sink that is 50 K. What is the approximate efficiency of the heat engine?

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  1. 20 June, 23:10
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    Efficiency = 1 - 50/225 = 1 - 2/9 = 7/9 = 77.77%
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