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This is another safety-related problem. It is concerned with the leakage of a gas from a high pressure storage tank. A cylinder of inside diameter 0.63m and height 3.3m is used to store compressed nitrogen. The nitrogen in the vessel is maintained at a constant temperature of 25degree C . Initially, the pressure inside the vessel is 785 kPa . A small hole is formed in the side of the vessel due to corrosion, and the gas stalls leaking out at a constant flow rate of 0.22kg/h. Calculate the pressure in the vessel at the end of nine hours. You must use good judgment m determining the number of significant figures to use in taking the round numbers given in the problem statement and evaluating results from them.
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
a piston-cylinder assembly with a free piston contains 0.45 m3 of propane vapor and 0.05 m3 of liquid propane as a
1. consider a conical pendulum that is a ball of mass m at the end of a string of length li moving in a horizontal
determine (a) the reaction at end A and B , (b) the minimum required cofficient of static friction at end A
a 2-kw iron is left on the ironing board with its base exposed to the air at 25 degc. if the surface temperature is 500
Determine the mass flow rate of the air passing through this engine and the rates of heat addition and rejection when this engine produces 1000 hp. Assume constant specific heats at room temperature.
a steady-flow compressor is used to compress helium from 15 psia and 70of at the inlet to 200 psia and 600of at the
a system carries crude oil of specific gravity 0.8. the volumetric flow rate at point 1 the inlet is 10 ft3s. branch 1
the flux density of a magnetic field is 20000 lines per sq in. what length of conductor should cut the flux to produce
calculate the work necessary to compress air in an isolated cylinder with initial and final volumes of 6.0 and 1.2 ft3
the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must
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