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Steam enters a nozzle operating at steady state at 20 bar, 280oC, with a velocity of 80 m/s. The exit pressure and temperature are 7 bar and 180oC. The mass flow rate at the inlet is measured and is 1.4 kg/s. Neglect heat transfer and potential energy changes. Find: a) the mass flow rate at the exit (kg/s), b) the exit velocity (m/s) and c) the exit flow area (cm2).
a gas is contained in a vertical piston-cylinder arrangement. the 50-lbm piston initially rests on the bottom stops.
a brayton cycle produces 14 mw with an inlet state of 17oc 100 kpa and a compression ratio of 161. the heat added in
Find the slope of the liquid surface in the can if the merry-go-round spins at 0.3 revolution per second.
r-134a is throttled from 1200kpa and 40 degree c to 200kpa. it is known that heat of 5kjkg is lost from r-134a to the
1 current airbag regulations specify that they must only pass a test designed to protect a 175 pound male who is not
gold foil is 0.08 mm thick and 670mm2 in area. a it is cubic with a0.4076nm. how many unit cells are there in the foil?
a 9 meter diameter balloon filled with helium carries a 100 kg person.the force that will push the balloon up is f p
in cold weather condensation frequently occurs on the inner surfaces of the windows due to the lower air temperatures
a closed rigid tank whose volume is 1.5m3 contains refrigerant 134a initially a two-phase liquid-vapor mixture at 10
a building for which the heat transfer rate through the walls and roof is 1400 btuh per degree temperature difference
consider an aircraft powered by a turbojet engine that has a pressure ratio of 9. the aircraft is stationary on the
an ice skating rink is located in a building where the air is tair 20c and the walls are at tw 25c. the convection
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