Engineering, 20.02.2020 11:14 cxndii13

Show from the first principles that, for a perfect gas with constant specific heat capacities
expanding polytropically (i. e. according to the law pvn = constant) in a non-flow process,
the change of entropy can be expressed with usual notation, by the following equation.
2 − 1 =( − / − 1)(/)(2/1)

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