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Category > Physics Posted 17 Jun 2017 My Price 4.00

Question (2)

Question (2) Consider a room that is initially at the outdoor temperature of 200C. It contains a 50-W light bulb, a 250-W TV set, a 300-W refrigerator, and a 2000-W microwave. Determine the rate of increase of the energy content of the room when all of these electric devices are on (Assume no heat transfer from the wall).

 

 

A five m3 tank containing air at 25 C and 500 kPa is connected through a valve to another tank containing 3 kg of air at 35 0C and 100 kPa. Now the valve is opened, and the entire system is allowed to reach thermal equilibrium with the surroundings, which are at 20 0C. Determine the volume of the second tank and the final equilibrium pressure of air. Assumption: At specified conditions, air behaves as an ideal gas. The gas constant of air, R = 0.287 kJ/kg.K

Answers

SuperTutor
(15)
Status NEW Posted 17 Jun 2017 03:06 AM My Price 4.00

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