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A piston cylinder device is equipped with a paddle-wheel driven by an external motor and is filled with gas. The walls of the cylinder, the piston, and the paddle-wheel and its shaft are all made of a material which is very good insulator. The system contains 50 g of gas.Initially the gas is in state A. The paddle-wheel is then operated, but the piston is allowed to move to keep the pressure constant. Then the paddle-wheel is stopped, and the system is found to be state B. There is very little friction between the piston and cylinder walls. Determine the energy transfer in joules along the paddle-wheel shaft. State A B P, bars 35 35 v, m3/kg 7.11 19.16 u, J/g 22.75 47.64 h/ J/g 47.64 164.69

A piston cylinder device is equipped with a paddle-wheel driven by an external motor and is filled with gas. The walls of the cylinder, the piston, and the paddle-wheel and its shaft are all made of a material which is very good insulator. The system contains 50 g of gas.Initially the gas is in state A. The paddle-wheel is then operated, but the piston is allowed to move to keep the pressure constant. Then the paddle-wheel is stopped, and the system is found to be state B. There is very little friction between the piston and cylinder walls. Determine the energy transfer in joules along the paddle-wheel shaft. State A B P, bars 35 35 v, m3/kg 7.11 19.16 u, J/g 22.75 47.64 h/ J/g 47.64 164.69

Elements Of Electromagnetics
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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A piston cylinder device is equipped with a paddle-wheel driven by an external motor and
is filled with gas. The walls of the cylinder, the piston, and the paddle-wheel and its shaft are
all made of a material which is very good insulator. The system contains 50 g of gas.Initially
the gas is in state A. The paddle-wheel is then operated, but the piston is allowed to move to
keep the pressure constant. Then the paddle-wheel is stopped, and the system is found to be
state B. There is very little friction between the piston and cylinder walls. Determine the energy
transfer in joules along the paddle-wheel shaft.

State A B
P, bars 35 35
v, m3/kg 7.11 19.16
u, J/g 22.75 47.64
h/ J/g 47.64 164.69
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