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6 Depicted on the right is a thermodynamic cycle performed on an ideal gas (no phase change). The process a to b is an isothermal process (constant temperature). b to c is an isobaric process constant pressure), and c to a is an adiabatic process (Q=0). Note, you are given pressures at states a, b, and c, and volumes at states b and c. P (105 Pa) 1) What is AU for the entire cycle? Explain your answer. 1 b V (103 m 12 2) Determine the sign of the work done by the entire cycle, and the sign of the heat transfer for the whole cycle. Explain your answer. 3) Determine the volume at state a. Show your work. (Recall, process a to b is a constant temperature process). 4) Determine the work done in the process b to c. Show your work.