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A heat engine is involved with exchange of heat of 1915 J, - 40 J, +125 J and - Q J, during one cycle achieving an efficiency of 50.0%. The value of Q is : | (a) 640J (b) 40J (c) 980J (d) 400J

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 80AP: A Carnot engine operates in a Carnot cycle between a heat source at 550 and a heat sink at 20 ....

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Question

A heat engine is involved with exchange of heat of 1915 J,
- 40 J, +125 J and - Q J, during one cycle achieving an
efficiency of 50.0%. The value of Q is :
(a) 640J
(b) 40J
(c) 980J
(d) 400J

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