a) A freely-moving piston-cylinder device contains 0.4 m³ or air at 300 kPa and 57 °C at its initial state. A paddle wheel placed within the confined space is turned on and dissipates a heat of 100 kJ to the air. During the operation, 10 kJ of heat is lost to the surrounding area. Applying constant specific heats of air at room temperature (cp= 1.005 kJ/kg. K; cv = 0.718 kJ/kg K; k = 1.4, R = 0.287 kJ/kg. K)., compute: The final temperature of the piston cylinder device The final volume of the piston-cylinder device 1) 11) 111) The boundary work done by the piston-cylinder device Present the process on a P-v diagram iv)

a) A freely-moving piston-cylinder device contains 0.4 m³ or air at 300 kPa and 57 °C at its initial state. A paddle wheel placed within the confined space is turned on and dissipates a heat of 100 kJ to the air. During the operation, 10 kJ of heat is lost to the surrounding area. Applying constant specific heats of air at room temperature (cp= 1.005 kJ/kg. K; cv = 0.718 kJ/kg K; k = 1.4, R = 0.287 kJ/kg. K)., compute: The final temperature of the piston cylinder device The final volume of the piston-cylinder device 1) 11) 111) The boundary work done by the piston-cylinder device Present the process on a P-v diagram iv)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

a) A freely-moving piston-cylinder device contains 0.4 m³ or air at 300 kPa and 57 °C at
its initial state. A paddle wheel placed within the confined space is turned on and
dissipates a heat of 100 kJ to the air. During the operation, 10 kJ of heat is lost to the
surrounding area. Applying constant specific heats of air at room temperature (cp=
1.005 kJ/kg . K; C, = 0.718 kJ/kg. K; k = 1.4, R = 0.287 kJ/kg. K)., compute:
The final temperature of the piston cylinder device
1)
11)
The final volume of the piston-cylinder device
111)
The boundary work done by the piston-cylinder device
Present the process on a P-v diagram
iv)

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