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OpenStudy (vampirediaries):

An engine absorbs 2150 J as heat from a hot reservoir and gives off 750 J as heat to a cold reservoir during each cycle. What is the efficiency of the engine?

OpenStudy (vampirediaries):

@bibby , @mathmate can you help me?

OpenStudy (mathmate):

What is the percentage of "useful" energy obtained out of the original energy absorbed?

OpenStudy (vampirediaries):

2150 J

OpenStudy (surry99):

look up Carnot efficiency

OpenStudy (mrnood):

The difference between heat taken in and heat given off is the useful energy efficiency = useful energy/input energy

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