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Air is enclosed in a rigid cylinder containing a piston. A pressure gauge attached to the cylinder gives an initial reading of 20 psig. Determine the reading of the gauge after the piston has compressed the air to one third of its initial volume. Assume that the compression process is isothermal (i.e. constant temperature) and that the local atmospheric pressure is 14.7 psia. An aircraft carries an oxygen cylinder to which a gauge is attached. The gauge reads 100 kPa(g). The air inside the aircraft is pressurized to 8 psi above the ambient pressure outside the aircraft, which is flying at 12,000 m in a standard atmosphere (see data sheets at back). What is the absolute pressure of the cabin air and of the oxygen in the tank?
an emergency situation developed as a result of the failure of the cooling system of a portable electronic device used
for the spring-mass-pulley system of figure 5-37 the moment of inertia of the pulley about the axis of rotation is j
A glass contains a mixture of water and ice cubes, with a total mass of 0.2 kg and at a temperature of 0 C. The mass of ice cubes is 1/3 of the mass of the mixture in the glass. As a result of heat transfer from the surroundings at 20 Celsius degree ..
air enters a compressor operating at steady state with a pressure of 1 bar a temperature of 20degc and a volumetric
A fluid flow axially in the annular region between two concentric pipes with radii R1 and R2>R1, respectively. Assume the flow is steady, incompressible, axisymmetric, fully-developed, and has no swirl. Also neglect all body forces.
what does the employee coaching process involve and what kinds of employees will benefit from the process? describe the
refrigerant 134a enters the compressor of a refrigeration system as saturated vapor at 0.14mpa and leaves at
hot water at an average temperature of 90oc passes through a row of eight parallel pipes that are 4 m long and have an
Five pounds of propane have a volume of 1 ft3 and a pressure of 600 psi. Determine the temperature (in °R) using each of the following methods.
A typical hydraulic pumping unit or hydraulic power unit might contain. Branch air circuits use the operate in the ____ range.
If the bar begins to slip when () = 25°, determine the coefficient of static friction µ,s between the bar and the platform. Neglect friction in the roller and the small thickness of the platform.
A sphere 1 ft in diameter is moving horizontally at a depth of 12ft below a water surface where the water temp is 50 deg F. Vmax=1.5Vo, where Vo is the free stream velocity and occurs at the max sphere width. At what speed in still water will cavitat..
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