An engine with an output of 150W has an efficiency of 25%. It works at 10 cycles/s.(adsbygoogle = window.adsbygoogle || []).push({});

A. How much work is done in each cycle?

work=power(delta t) = 150 W * 1s = 150 J

work =15.0 J per cycle

**got part A correct

B. How much heat is given off in each cycle?

delta internal energy = delta work + delta heat

delta intergy = 0 bc its a complete cycle

delta heat = - delta work

delta heat = 15 J

**Part B isn't coming out.....please guide in the correct direction if possible.

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# Homework Help: Heat problem

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