Example Problem Solutions from:

Physics for Scientists & Engineers

by Douglas C. Giancoli
Volume 1, 4th Edition, Pearson Prentice Hall, Upper Saddle River, NJ, 2008

Chapter 20: Second Law of Thermodynamics

"CHAPTER-OPENING QUESTIONS - Guess now!
Fossil-fuel electric generating plants produce thermal pollution.: Part of the heat produced by the burning fuel is not converted to electric energy. The reason for this waste is
(a) The efficiency is higher if some heat is allowed to escape
(b) Engineering technology has not yet reached the point where 100% waste heat recovery is possible
(c) Some waste heat must be produced: this is a fundamental property of nature when converting heat to useful work
(d) The plants rely on fossil fuels, not nuclear fuel
(e) None of the above."

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