Unformatted text preview: 4. A system contains air, initially at P 1 = 200 kPa, V 1 = 0 . 1 m 3 , and T 1 = 400 K. The system is now allowed to expand, and during the process the pressure and volume are related by Pv 1 . 4 = constant. At the ﬁnal state a total of W 1 − 2 = 10 kJ has been done by the system. Find the ﬁnal temperature and volume. Assume ideal gas behavior. 5. A gas is contained in a spherical balloon. The balloon has an initial diameter of D 1 = 0 . 05 m, and the initial pressure of the gas is P 1 = 120 kPa. Gas is now added to the balloon, during which the pressure increases proportionally with diameter, i.e., P P 1 = D D 1 At the end of the process the diameter of the balloon has doubled. Find the work done by the gas in the balloon during the process....
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 Fall '11
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 Dynamics, Thermodynamics, ideal gas behavior

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