A closed vertical cylinder containing 0.3 kg of nitrogen at 90°C is fitted with a weighted, frictionless piston so that a constant pressure of 275 kPa is maintained on the gas. The nitrogen is stirred by a paddle wheel inserted through the cylinder wall until the until the absolute temperature of gas is doubled. During the process 20 kJ of heat is transferred from the nitrogen to the sorroundings. Determine the amount of paddle-wheel work required for this process.
A closed vertical cylinder containing 0.3 kg of nitrogen at 90°C is fitted with a weighted, frictionless piston so that a constant pressure of 275 kPa is maintained on the gas. The nitrogen is stirred by a paddle wheel inserted through the cylinder wall until the until the absolute temperature of gas is doubled. During the process 20 kJ of heat is transferred from the nitrogen to the sorroundings. Determine the amount of paddle-wheel work required for this process.
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 closed vertical cylinder containing 0.3 kg of nitrogen at 90°C is fitted with a weighted, frictionless piston so that a constant pressure of 275 kPa is maintained on the gas. The nitrogen is stirred by a paddle wheel inserted through the cylinder wall until the until the absolute temperature of gas is doubled. During the process 20 kJ of heat is transferred from the nitrogen to the sorroundings. Determine the amount of paddle-wheel work required for this process.
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