Air is compressed in a cylinder polytropically from an initial temperature and pressure of 84°F and 16 psia to a final of 290°F and 78 psia. The cylinder contains 0.015 lb of air, and has a piston area of 0.18 sq ft. Sketch the process on P - v and T – s coordinates and find the work done, ft.lbf

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A: for solution refer below images.

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.