0.5 kg of a certain gas is contained within a piston-cylinder assembly. The gas undergoes a process for which the pressure-volume relationship is pV = constant. Gas PV = constant The initial pressure is 2 bar, the initial volume is 0.15 m3, and the final volume is 0.25 m3. The change in specific internal energy of the gas in the process is u2-u1 = -30 kJ/kg. There are no significant changes in kinetic or potential energy. a) Determine the final pressure (5 points) b) Sketch the process on a p-V diagram ( 5 points) c) Calculate the work done by the piston, in kJ. (10 points) d) Apply the first law of thermodynamics and determine the net heat transfer for the process, in kJ. (15 points) e) Did the system gain or lose heat during the process? Justify your answer. (5 points)

0.5 kg of a certain gas is contained within a piston-cylinder assembly. The gas undergoes a process for which the pressure-volume relationship is pV = constant. Gas PV = constant The initial pressure is 2 bar, the initial volume is 0.15 m3, and the final volume is 0.25 m3. The change in specific internal energy of the gas in the process is u2-u1 = -30 kJ/kg. There are no significant changes in kinetic or potential energy. a) Determine the final pressure (5 points) b) Sketch the process on a p-V diagram ( 5 points) c) Calculate the work done by the piston, in kJ. (10 points) d) Apply the first law of thermodynamics and determine the net heat transfer for the process, in kJ. (15 points) e) Did the system gain or lose heat during the process? Justify your answer. (5 points)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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