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Long cylindrical steel rods (p=7833kg/m3 and cp=0.465kJ/kg*°C) of 8-cm diameter are heat treated by drawing them at a velocity of 4m/min through an 8-m-long oven maintained at 900°C. If the rods enter the oven at 25°C and leave at 750°C, determine (a) the rate of heat transfer to the rods in the oven and (b) the rate of entropy generation associated with this heat transfer process.
During an experiment, an aerospace engineering student measures a wind tunnel's velocity N times. The student reports the following information, based on 90% confidence, about the finite data set: mean velocity=25 m/s, velocity standard deviation=1.5..
the qb q throws a football when the wr r is in the postion shown 30 yards away the wr velocity is constance at 10 ydsec
an aluminum extrusion dimensions 50x60 with 5 mm thick walls is spot welded to a thin aluminum plate by a single row of
an elevator weighing 1000lb is carrying a load of 500 lb and descending at 20 fts. the cable supporting the
a research facility on the moon will include a series of canals connected to a central lake which will simultaneously
the 2.4m wide portion abcd of an inclined cantilevered walk-way is partially supported by members ef and gh. knowing
argon at 20 degrees c and 100kpa has a velocity of 27 ms and enters a constant diameter pipe of 18mm. as the argon
a car is travelling over a hill. if using a cartesian coordinate system with origin at the top of the hill the hills
The professor takes a 3 liter empty can and fills it with saturated water vapor at 100 deg. C, 1 atm. He seals the can and immerses it in ice water. If the can is perfectly rigid, what is the final pressure in the can? And what mass fractions of the ..
consider a plane wall experiencing transient 1-d heat conduction in x-direction. draw the temperature profile t as a
an ideal gas flows into one end of a porous cylinder at a temperature of 400 degrees k and out the other end at a
air enters the compressor of a regenerative gas-turbine engine at 300 k and 100 kpa where it is compressed to 800 kpa
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