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Water at 24 degree C flows at 0.8 m/s in a smooth, 1.5 cm I.D. tube that is kept at 27 degree C. The system is extremely clean and quiet, and the flow stays laminar until a noisy air compressor is turned on in the laboratory. Then it suddenly goes turbulent. Calculate the ratio of the turbulent h to the laminar h. [hturb = 4429 W/m2K.]
two lb of water vapor in a piston cylinder assembly is compressed at a constant pressure of of 250 lbfin2 from a volume
A 2 cm horizontal jet of water with a velocity of 15 m/s is spraying onto a vertical plate attached to a cart moving opposite the direction of the water jet at 8 m/s. Determine the force required to keep the cart moving at a constant velocity.
consider 2.0 kg of a 99.6 wt fe-0.4 wt c alloy that is cooled to a temperature just below the eutectoid. a how many
(a) determine how much ice has melted to bring the temperature of the beverage to equilibrium with the ice/water. (b) Determine the final equilibrium temperature
the revolving joint type v of an industrial robot has a range of 240? rotation. the mechanical errors in the joint and
Evaluate the reduction in pump BHP required by heating the oil from 50° F to 100° F. Suppose efficiency of 80% (HP)
two meshing helical gears have a 25 degree transverse pressure angle and a 20 degree normal pressure angle. the gears
a 45 wt pb-55 mg alloy is rapidly quenched to room temperature from an elevated temperature in such a way that the high
refrigerant 134-a enters a compressor as a saturated vapor at 200 kpa at a rate of 0.04 m3s. the power input to the
experiments have been conducted on a steel vertical flat plate 130 mm in width and 160 mm long. the plate is heated
showing the two upward pulls of the rings on his hands, each of size 380N. Calculate the angle between the wires supporting the rings and the vertical.
What is hogr? How much steam pressure is required to maintain adequate vacuum with it? Where are hogr used in general?
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