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A thermodynamicist is attempting to model the process of balloon inflation by assuming that the elastic casing behaves like a spring opposing the expansion as presented in the figure. As air is admitted, the spring is compressed. The pressure in the gas space is given by P-Pi = k(L-Li) , k = const = 5 bar/m. The initial conditions in the gas space are Pi = 1 bar, Ti = 300 K, and Li = 0.15 m. The piston area is 0.02 m2. The air is an ideal gas and cv = 20.9 J/mol. K, independent of temperature. What is the air temperature in the gas space when L = 0.6 m? What is the entropy generation in the process and change in the availability of the system?
a nozzle discharges a stream of water of cross-sectional area a with a velocity va. the stream is deected by a single
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a tensile member of 2024-0 aluminum alloy used for aircraft fuselage had an original cross-sectional area of 4.0square
What is the discharge revised discharge pressure of the compressor.
A lathe can be modelled as an electric motor mounted on a steel table. The table plus the motor has a mass of 50 kg. The rotating parts of the lathe have a mass of 5 kg at a distance 0.1 m from its center. The damping ratio is 0.06 and the natural fr..
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A single-row deep groove ball bearing operating at 1500 rpm is acted upon by a 2668 lb. radial load. The inner ring rotates, the load is steady and the service is continuous. Determine the rating life in hours if the basic load rating is 9210 lb.
Equally spaced parts, with the distance between the parts being 10 inches, are coming on a conveyor belt. A machine tool has to operate on the part for 1 second as the part is moving on the conveyor. The speed of the conveyor belt is 5 in/second.
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