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HW-Ch18 - HW-CH18 9th Edition CH18 Problems 15 44 63 69 8th...

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HW-CH18 9th Edition CH18 Problems: 15, 44, 63, 69 8th Edition CH18 Problems: 17, 46, 61, 95 15. A steel rod is 3.00 cm in diameter at 25.00 o C . A brass ring has an interior diameter of 2.992 cm at 25.00 o C . At what common temperature will the ring just slide onto the rod? 44. A thermodynamic system is taken from state A to state B to state C, and then back to A, as shown in the p-V diagram of Fig.18-39a. The vertical scale is set by p s = 40 Pa, and the hori- zontal scale is set by V s = 4.0 m 3 . (a)-(g) Com- plete the table in Fig. 18-39b by inserting a plus sign, a minus sign, or a zero in each indicated cell. (h) What is the net work done by the sys- tem as it moves once through the cycle ABCA? 63. Figure 18-47 shows (in cross section) a wall con-
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