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On a hot summer day, a student turns his fan on when he leaves his dorm room in the morning. The dorm is well insulated but not air conditioned, and all of the doors and windows are closed.
a. Draw a simple picture of this room after the student leaves it, showing all significant mass and energy flows into an out of the room.
b. When the student returns to his room in the evening, will the room be warmer or cooler than the neigh boring rooms? Why?
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steam enters the turbine in a vapor power plant at 1600 psia and 1000 degrees f state 1 and expands to a pressure of 1
The temperature of the water drops to 260 F as a result of heat transfer to the surroundings. Determine the final pressure in the tank?
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The ball A is moving with constant velocity of 2 m/s and hits ball B. The ball B and C are at rest and they are connected with an unreformed spring with k= 100 N/m. All three balls are identical with 200 kg mass. Assume the impact between A and B is ..
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