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Chilled water enters a thin shelled 4 cm diameter, 200 m long pipe at 7 deg. Celsius at a rate of 0.98 kg/sec and leaves at 8 deg. Celsius. The pipe is exposed to an ambient air at 30 deg. Celsius with a heat transfer coefficient of 9 W/m^2*K. If the pipe is to be insulated with glass wool insulation (k=0.05 W/m*K) in order to decrease the temperature rise of water to 0.25 deg. Celsius, determine the required thickness of insulation.
A car accelerates uniformly rest to 81 ft/s over a distance of 700 ft along a curve of 800ft radius .Determine the magnitude of the total acceleration at the instant that speed of 81ft is reached.
a sealed piston-cylinder assembly contains 3 lbm of water. the water is initially at p1 40 psia and t1 300degf. the
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturatednbspvapor at 240of and
liquid octane c8h18 at 25ordmc 1.0 atm enters a well-insulated reactor and reacts with air entering at the same
Calculate the yield stress of the material and the force required to produce yield - determine the bulk modulus of the material.
during a particular thunderstorm the electric potential difference between a cloud and the ground is vcloud - vground
a 3 cm thick stainless steel thermal diffusivity 0.0000044 k16.3 plate initially at 500degc is suddenly exposed to
Product and Engineering Design Review
Determine the time taken for the crate to come to a rest and the distance travelled if the coefficient of dynamic friction is 0.4
an ideal brayton cycle with regeneration has a pressure ratio of 10. air enters the compressor at 300k and the turbine
The steam from the nozzles of a single wheel impulse turbine discharges with a velocity of 600 m/s at an angle of 20 degrees. The blade wheel rotates at 3000 rev/min and the mean blade radius is 590 mm
for a metal that has the simple cubic crystal structure calculate the atomic radius if the metal has a density of 8.38
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