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A sheet of rubber is stretched out over a ring of radius 0.25 m. I pour liquid water at 20?C on it, as in Fig. P3.205, so that the rubber forms a half sphere (cup). Neglect the rubber mass and find the surface tension near the ring.
Estimate the convective heat transfer coefficent for natural convenction from a horizontal steam pipe. The outside surface temperature of the insulated pipe is 80 degree C. The surrounding air temperature is 25 degress C.
a poorly designed 100 ft long homogeneous barge runs on diesel fuel, the fuel is held in a 2' tall trapezoidal tank of the same length as the barge. and is located at the bottom of the barge hull.
Torque is transferred through two shafts by means of gears. If the diameters of gears B and C are in the ratio 1:2, what should the ratio of shaft diameters be so that both shafts have the same shear stress
Plot the power input to the compressor and the electric power saved by using a heat pump rather than electric resistance heating as functions of compressor efficiency, and discuss the results.
Two pounds of an ideal gas are contained within a piston-cylinder arrangement. The initial volume and pressure are 1 ft3 and 75 psia respectively. The final volume is 3 ft3.
An intersection approach has three lanes, permitted left turns, and 6% left-turning volume with a through vehicle equivalent of 5.0 tvu/left turn. The saturation flow rate for through vehicles under prevailing conditions is 1,700 veh/hg/ln.
An outdoor track is 125m in diameter. A runner increases her speed at a constant rate from 4 to 7 m/s over a distance of 30m. Determine the magnitude of the total acceleration of the runner 2 s after she begins to increase her speed.
Due to atmosphere drag, the deceleration equation is 60a=588.6-30v^2 in m/s^2. Find the velocity at which he lands on the ground. This velocity is referred to as terminal velocity, which is found by letting the distance of the fall (y) go to infin..
List some of the advantages and disadvantages of rectangular primary sedimentation tanks over circular sedimentation tanks which must be considered prior to the selection
Two Tangents intersect at a PI Station of 35+33.24 whose coordinates are N=10349.64 feet and E= 10436.79 feet. The Intersection angle (I) = 20°15'42" Right, and the azimuth of the back Tangent is 23°14'32". (This azimuth is from the PC to the PI.)
Compute the amount of chlorine required for disinfection in pounds per day(lb/d). Estimate the annual cost for disinfection using chlorine. Flow Rate= 30 milloin gallons per day.
A vertical curve is designed for 55 mi/h and has aninitial grade of +2.5% and a final grade of 1.0%. The PVT is at station 114 + 50. It is known that a point onthe curve at station 112 + 35 is at elevation 245 ft.
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