Physics, 10.10.2019 05:10 hannahkharel2
An air pistol contains compressed air in a small cylinder. assume that the volume is 1 cm3, pressure is 1mpa, and the temperature is 27°c when armed. a pellet, m = 2g, acts as a piston, initially held by a pin (trigger); when released, the air expands in an isothermal process (t = constant). if the air pressure is 0.1 mpa in the cylinder as the bullet leaves the gun, find a. the final volume and the mass of air. b. the work done by the air and work done on the atmosphere (the bullet pushes the atmospheric
Answers: 2
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
An air pistol contains compressed air in a small cylinder. assume that the volume is 1 cm3, pressure...
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