7. Gaseous CO2 is contained in a vertical piston–cylinder assembly by a piston of mass 50 kg and having a face area of 0.01 m2. The mass of the CO2 is 4 g. The CO2 initially occupies a volume of 0.005 m3 and has a specific internal energy of 657 kJ/kg. The atmosphere exerts a pressure of 100 kPa on the top of the piston. Heat transfer in the amount of 1.95 kJ occurs slowly from the CO2 to the surroundings, and the volume of the CO2 decreases to 0.0025 m3. Friction between the piston and the cylinder wall can be neglected. The local acceleration of gravity is 9.81 m/s2. For the CO2 determine (a) the pressure, in kPa, and (b) the final specific internal energy, in kJ/kg.
7. Gaseous CO2 is contained in a vertical piston–cylinder assembly by a piston of mass 50 kg and having a face area of 0.01 m2. The mass of the CO2 is 4 g. The CO2 initially occupies a volume of 0.005 m3 and has a specific internal energy of 657 kJ/kg. The atmosphere exerts a pressure of 100 kPa on the top of the piston. Heat transfer in the amount of 1.95 kJ occurs slowly from the CO2 to the surroundings, and the volume of the CO2 decreases to 0.0025 m3. Friction between the piston and the cylinder wall can be neglected. The local acceleration of gravity is 9.81 m/s2. For the CO2 determine (a) the pressure, in kPa, and (b) the final specific internal energy, in kJ/kg.
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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7. Gaseous CO2 is contained in a vertical piston–cylinder assembly by a piston of mass 50
kg and having a face area of 0.01 m2. The mass of the CO2 is 4 g. The CO2 initially
occupies a volume of 0.005 m3 and has a specific internal energy of 657 kJ/kg. The
atmosphere exerts a pressure of 100 kPa on the top of the piston. Heat transfer in the
amount of 1.95 kJ occurs slowly from the CO2 to the surroundings, and the volume of
the CO2 decreases to 0.0025 m3. Friction between the piston and the cylinder wall can
be neglected. The local acceleration of gravity is 9.81 m/s2. For the CO2 determine (a)
the pressure, in kPa, and (b) the final specific internal energy, in kJ/kg.
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