The graph in Fig. P19.48 shows a pV-diagram for 3.25 moles of ideal helium (He) gas. Part

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The graph in Fig. P19.48 shows a pV-diagram for 3.25 moles of ideal helium (He) gas. Part  ca of this process is isothermal. 

(a) Find the pressure of the He at point a. 

(b) Find the temperature of the He at points a, b, and c. 

(c) How much heat entered or left the He during segments ab,bc, andca? In each segment, did the heat enter or leave? 

(d) By how much did the internal energy of the He change from a to b, from b to c, and from c to a? Indicate whether this energy increased or decreased.

Figure P19.48 Р (Ра х 105) 2.0 V(m³) O 0.010 0.040

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University Physics with Modern Physics

ISBN: 978-0321696861

13th edition

Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford

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