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1. An ideal gas undergoes the changes shown in the PV plane.
a) Establish for each pair of variables the corresponding sign (>,=,<)
b) Establish the corresponding values of the polytropic exponent k (0, 1, 1, ∞)
P
3
Isotherm
1-2
2-3
3-4
4-1
P1
P2
V1
|V2
P2
P3
V2
V3
海鮮
P3
P4
V3
V4
P4
P1
V4
V1
Process
Isotherm
T1
T2
T3
T4
T2
T3
T4
T₁
k

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