A 14-ft tank contains oxygen initially at 14.7 psia and 80°F. A paddle wheel within the tank is rotated until the pressure inside rises to 20 psia. During the process 20 Btu of heat is lost to the surroundings. Determine the paddle-wheel work done. Neglect the energy stored in the paddle wheel. The gas constant and molar mass of oxygen are R= 0.3353 psia-ft³/lbm-R and M= 32 lbm/lbmol. The specific heat of oxygen at the average temperature of Tavg = (735+540)/2 = 638 R is Cv,avg=0.160 Btu/lbm-R. The paddle-wheel work done is Btu.

A 14-ft tank contains oxygen initially at 14.7 psia and 80°F. A paddle wheel within the tank is rotated until the pressure inside rises to 20 psia. During the process 20 Btu of heat is lost to the surroundings. Determine the paddle-wheel work done. Neglect the energy stored in the paddle wheel. The gas constant and molar mass of oxygen are R= 0.3353 psia-ft³/lbm-R and M= 32 lbm/lbmol. The specific heat of oxygen at the average temperature of Tavg = (735+540)/2 = 638 R is Cv,avg=0.160 Btu/lbm-R. The paddle-wheel work done is Btu.

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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