Is This Calculation of Heat Engine Efficiency Correct?

Thread starter needhelp83
Start date Nov 22, 2006

AI Thread Summary

The calculation for the efficiency of the heat engine is confirmed as correct, yielding an efficiency of 32%. The formula used is e = W/Q_h, where W is the useful work and Q_h is the heat produced. The values provided were 2700 J of work and 8500 J of heat. The simplicity of the problem raised some initial doubts, but the calculation stands validated. Overall, the efficiency calculation is straightforward and accurate.

Nov 22, 2006

needhelp83

A heat engine produces 8500 J of heat while performing 2700 J of useful work. What is the efficiency of this engine?

e=W/Q_h =2700 J/8500 J =0.32 or 32%

This just looked way to easy...hoping to have someone double check

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Nov 22, 2006

radou

Homework Helper

Sounds good.

Nov 22, 2006

needhelp83

Wow, what an easy problem. Thanks for the help

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