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Nitrogen gas is flowing in a 50mm diameter pipe at the rate of 0.05kg/s. The nitrogen flows through a partially closed valve installed in the pipe. Just before the nitrogen flows through the valve, the nitrogen is at 15 degress centigrade and 200kPa. The temperature of the nitrogen is essentially unchanged as it flows through the valve but its pressure drops to 170kPa. The pressures of the nitrogen are low enough to treat it as an ideal gas. Determine the velocities of the nitrogen upstream and downstream from the valve.
an open feedwater heater operates steadily with 30 kghr of liquid water entering one inlet at 40 degcnbspand 700 kpa.
consider a brayton cycle with the following given data pressure ratio 9.2 air at compressor inlet is at 25 deg f air
Describe how you would implement it using an open-loop system
an isolated muscle with cylindrical shape is stimulated repeatedly until the concentration of lactate in the muscle
determine the heat transfer per kg necessary to raise the temperature of a closed rigid tank of saturated water vapor
Use calculus to obtain a closed-form solution for the case where the parachutist jumper is initially at rest (v=0 at t=0) to solve F(upward)= -cv^2, where c = a second-order drag coefficient (kg/m).
steam enters a well insulated nozzle operating at steady state at 1000of and 500lbfin2 and velocity 10fts. at the
If water leaves the basement at 88C, determine the rate of heat loss from the weather.
a particle moving in the x-y plane has a position vector given by r 1.31t2i 1.43t3j where r is in inches and t is in
for a certain material failures were reported after 3000 hours at 650 c and 186 hours at 700 c when loaded at 250 mpa.
consider a 24-kw hooded electric open burner in an area where the unit costs of electricity and natural gas are 0.10kwh
Determine the molecular weight of a poly(ethylene-propylene) with a degree of polymerization of 25,000 given that 20% of the mers (by number) are ethylene and 80% are propylenel.
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