Giancoli Ch. 15 – p. 436, Problems #51-53, 55, 60, 61, 65 key

51) yes, his claim is impossible

52a) 220,000 J done by the gas

52b) 310,000 J added to the gas

53a) 40,000 J/s

53b) 160,000 J/s

53c) 220 s

55a) 7.7%

60) 70 K

61a) WADC = PA(VC – VA)

61b) WABC = PC(VC – VA)

61c) WAC = 1/2(PC + PA)(VC – VA)

65) 200 J required