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A piston cylinder contains 0.1 kg air at 300 K and 100 kPa. The air is now slowly compressed in an isothermal (constant temperature) process to a final pressure of 250 kPa. Air is assumed as ideal gas; the gas constant of air is R = 0.287 kJ/kg-K .
1) Find the work in the process.
2) What is the change in the internal energy of the air?
3) Find the heat transfer in the process.
4) Is heat transferred into or out of the air?
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A car weighing 5000 lb traveling at 60mph strikes the rear of a 20,000 truck that is stopped but does not have its brakes set. A.) Both vehicles stick together and move in the same direction as the car. At what speed are they moving? B.) The do not s..
calculate the change in entropy per kilogram as air is heated from 300 to 600k while pressure drops from 400 to 300kpa
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A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
A steam power plant operates on an ideal reheat-regenerative Rankine cycle with one reheater and two open feed water heaters. Steam enters the high-pressure turbine at 1,500 psia and 1,100 degrees Farenheit and leaves the low-pressure turbine at 1 ps..
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