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Consider an evacuated rigid bottle of volume V that is surrounded by the atmosphere at pressure P0 and temperature T0. A valve at the neck of the bottle is now opened and the atmospheric air is allowed to flow into the bottle. The air trapped in the bottle eventually reaches thermal equilibrium with the atmosphere as a result of heat transfer through the wall of the bottle. The valve remains open during the process so that the trapped air also reaches mechanical equilibrium with the atmosphere. Determine the net heat transfer through the wall of the bottle during this filling process in terms of the properties of the system and the surrounding atmosphere.
a worldwide shortage of nickel has made inconel unavailable for steam generator tube manufacturing. describe the
Find the Temperature of the Refrigerant, A closed vessel with a volume of 2 ft^3 contains 5 lb of Refrigerant 134a. A pressure sensor in the tank wall reads 71.39 lbf/in.^2 (gage).
a carnot engine produces 30 hp while operating with an efficiency of 32. if the engin rejects heat to the atmosphere at
distance per tank of gas a car with a 20-gallon gas tank averages 21.5 miles per gallon when driven in own and 26.8
Calculate the magnitude of the moment about the base point O of the 600 N force and calculate and draw the shear force and bending moment diagram for the cantilever beam
a 825 mw electric power plant 36.2 efficient uses a coal with the following composition c 74.8 wt h 5.2 wt o 7.3
the potential for air pollution by particulate matter pm2.5 andor pm10 is best assessed by constructing the terminal
a force of 3 n stretches a spring by 1 m. a mass of 4 kg is attached to the spring. at t0 thenbspmass is pulled down a
heat is transferred steadily to boiling water in a pan through its flat bottom at a rate of 650 w. if the temperature
sludge is wet solids that result from the processing in municipal sewage systems. the sludge has to be dried before it
saturated water vapor at 400 f is heated at constant pressure until its volume is doubled. determine the final
a 15-hp shaft pump is used to raise water to a 45-m higher elevation.if the mechanical efficiency of the pump is 82
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