What is the efficiency of the machine
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What is the efficiency of the machine

[From: ] [author: ] [Date: 11-05-03] [Hit: ]
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if a machine loses 917 J of work as heat energy and still produces 1703 J of useful work,what is the efficiency of the machine?

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Output = 1703 J
Input = 917 J + 1703 J = 2620 J
η =Output / Input = 1703 J / 2620 J = 0.65 or 65%
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