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Linear process on a P-V diagram followed by isobaric compression to the original volume: total work done

The same question, asked 2 times: 29 Jul 2022*, 29 Jan 2024. Every wording below, oldest first.

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  1. Question 1

    29 Jul 2022

    107
    A thermodynamic system is taken from an original state DD to an intermediate state EE by the linear process shown in the figure. Its volume is then reduced to the original volume from EE to FF by an isobaric process. The total work done by the gas from DD to EE to FF will be

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  2. Question 2

    29 Jan 2024

    16
    A thermodynamic system is taken from an original state A to an intermediate state B by a linear process as shown in the figure. It's volume is then reduced to the original value from BB to CC by an isobaric process. The total work done by the gas from AA to BB and BB to CC would be:

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