In which case, when the gas in the cylinder is compressed to the same final volume, a lot of work is done

In which case, when the gas in the cylinder is compressed to the same final volume, a lot of work is done: when the piston is slowly pushed in or when it is fast?

With slow compression, the process can be considered isothermal, with fast compression, adiabatic. In the second case, the work done on the gas is greater than in the first.

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