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Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
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The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
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Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?
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Because there is very little friction, the lever is an extremely efficient simple machine. using a 9...
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