A gas expands under constant pressure P...

A gas expands under constant pressure P from volume `V_(1)` to`V_(2)`The work done by the gas is

`P(V_2-V_1)`

`P(V_1-V_2)`

`P(V_1^gamma-V_2^gamma)`

`P(V_1V_2)/(V_2-V_1)`

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