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If the boats engine has a heat input of 40000 J with 30000 J exhausted into the surroundings the heat sink what is its efficiency?
Wiki User
∙ 14y ago
efficiency = output/input
therefore, in above case it is 3/4= 0.75
or 75%.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoCalculate the difference (30,000 - 22,500) - that's the useful work the machine does. Divide the useful work by the heat input, to get the efficiency.
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