일반물리학 1 — The Kinetic Theory of Gases: Problem 55

55 A sample of an ideal gas is taken through the cyclic process abca shown in Fig. 19-24. The scale of the vertical axis is set by \( p_b = 7.5 \text{ kPa} \) and \( p_{ac} = 2.5 \text{ kPa} \). At point \( a \), \( T = 280 \text{ K} \). (a) How many moles of gas are in the sample? What are (b) the temperature of the gas at point \( b \), (c) the temperature of the gas at point \( c \), and (d) the net work done by the gas during the cycle, and (e) the net energy added to the gas as heat during the cycle?