Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 18 - The Laws of Thermodynamics - Problems and Conceptual Exercises - Page 648: 82

Answer

(a) engine A (b) $0.32$

Work Step by Step

(a) We know that the engine A has greater efficiency as compared to engine B because engine B works less as it exhausts more heat. (b) We can find the efficiency of engine B $e_B=2e_A-1$ We plug in the known values to obtain: $e_B=2(0.66)-1$ $e_B=0.32$
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