Conceptual Physics

Answers to selected problems

Chapter 21 Answers

C.1 Stays the same

C.3 The room temperature goes up

Answers vary

1.1 177 J

1.3 930 J

4.1 0.222 J/K

5.1 1.45 J/K

5.3 674 J

7.1 458°C

8.1 (a) 755 K

(b) 1.21e+5 J

8.3 8.88e+3 J

8.5 (a) 28.7 %
(b) 53.2 %

9.1 (a) 47.6 %

9.3 (a) 1.22

(b) 1.33

10.1 (a) 16
(b) 88 J

10.3 (a) 1.4e5 J

(b) 97 cents

12.1 0.0281 L

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