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A central heating system has a 60 W fan used to circulate air through the building ducts. A previous flow analysis showed that the fan needs to raise the air pressure by 50 Pa to maintain proper flow through the ducts. The fan is located in a horizontal section of circular duct whose diameter is 30 cm at both the inlet and outlet. Determine the highest possible average flow velocity in the duct.
helium is throttled from 1.2 mpa 20degc to a pressure of 100 kpa. the diameter of the exit pipe is so much larger than
The gage pressure in an automobile tire when measured during winter at 32 o F was 32 psig. The same tire was used during the summer when the temperature rose to 112 o F. If we assume that the volume of the tire did not change, and no air leaked out b..
carbon monoxide an ideal gas in a piston cylinder at an initial state of 320 k 160 kpa and 0.2 m3 is compressed in an
hot water at an average temperature of 90oc passes through a row of eight parallel pipes that are 4 m long and have an
a 9mm bullet with mass .28 oz.0175lbm exits a pistol at 1250 fts. find the kinetic energy in btu. if this bullet was
liquid octane c8h18 is burned in the constant pressure adiabatic combustor of an aircraft engine with 40 percent excess
you are asked to design a heating system for a swimming pool that is 2 m deep 25 m long and 25 m wide. your client
a 10.00-meter-long pipe closed at one end was inverted and submerged vertically in a minnesota lake until the closed
Water is pumped from a reservoir to a tank with a lift of 20.0 ft. The suction pipe, which connects the reservoir to the pump, has a 12in diameter and is 25ft long. The discharge pipe, which connects the pump to the tank, has a 10in diameter and is 4..
The turbine inlet flow rate is 125 kg/s of saturated steam at 300C for a simple, non-ideal Rankine cycle. The condenser operates at a temperature of 40C. The turbine efficiency is 88% and the feed water pump efficiency is 75%. There is also a pressur..
the collar p slides outward at a constant relative speed u along rod ab which rotates counterclockwise with a constant
A gas in a piston-cylinder assembly undergoes an expansion process for which the relationship between pressure and volume is given by pV^n = constant. The initial pressure is 4.25 bar, the initial volume is 0.25 m^3 and the final volume is 0.55 m^3.
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