Heat is transferred through the wall of a vertical cylinder to air trapped inside it by a frictionless piston of mass 10kg and radius 0.05m. When 300J of heat is transferred to the air the piston rises by 0.2m against the atmospheric pressure of 100kPa. (a) 2. Draw a sketch of the air, cylinder and piston showing the dimensions, forces and energy transfer. Draw a free-body diagram of the piston and use equilibrium of forces to find the pressure of the trapped air. Write down the first law of thermodynamics for the trapped air and identify those terms that do not apply to this process. Determine the change in internal energy of the trapped air when 300J is transferred and the piston rises 0.2m. (b) (c) (d) [Answers: 112,490Pa, 123.3 ]

Heat is transferred through the wall of a vertical cylinder to air trapped inside it by a frictionless piston of mass 10kg and radius 0.05m. When 300J of heat is transferred to the air the piston rises by 0.2m against the atmospheric pressure of 100kPa. (a) 2. Draw a sketch of the air, cylinder and piston showing the dimensions, forces and energy transfer. Draw a free-body diagram of the piston and use equilibrium of forces to find the pressure of the trapped air. Write down the first law of thermodynamics for the trapped air and identify those terms that do not apply to this process. Determine the change in internal energy of the trapped air when 300J is transferred and the piston rises 0.2m. (b) (c) (d) [Answers: 112,490Pa, 123.3 ]

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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