College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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I only need help with Part (d).

Problem 1:   In this problem a heat engine, each cycle, absorbs an amount of energy Qh = 1915 J from a hot reservoir and expels an amount Qc = 1325 J into a cold reservoir. Each cycle lasts for a time of t = 0.34 seconds.

Part (a)  Find the efficiency of an ideal engine operating between these reservoirs. Remember the efficiency is unit-less, therefore so should your number be as well. 

eideal = 0.308

 

Part (b)  How much work, in Joules, is done per cycle at this efficiency? 

Wideal = 590

Part (c)  How much power, in Watts, does the engine output per cycle at this efficiency? 

P = 1735.29

Part (d)  What if the actual work done (more realistically) is W = 320 J during a single cycle; what is the efficiency of this engine if the energy input is the same (again, the number should be unit-less)? 

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