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A constant pressure piston-cylinder apparatus contains 1.30 lbm of saturated liquid water at 212°F. Heat is added to this system until the contents reach a quality of 85.0%.
The surface temperature of the cylinder is constant at 250.°F.
Determine the irreversibility of this process if the local environment is at 14.7 psia and 70.0°F.
Suppose you want to "prove" that the average hospital in the United States averages more than 700 births per year. Use the hospital database as your sample and test this hypothesis. Let alpha be .01. On average, do hospitals in the United States e..
find speed of wind and tension in string?? (density=1. 25kg/mcube)
an aluminum pin fin has a diameter of 4 mm and a length of 20 mm. calculate the heat dissipated when the base
A 24 in long bar with a cross sectional area of 1.0 in^2 is subjected to an axial tensile load of 10,000 lb. compute the stress, strain and the total elongation if the bar material is :
a circular tube of outer diameter 5 cm and inner diameter 4 cm is used to convey hot fluid. the inner surface of the
A spherical water droplet having a diameter of 1.3 mm is allowed to fall from rest in atmospheric air at 1 atm and 20C. Estimate the velocities the duplet will attain after a drop of 30, 60, and 300 m.
Superimpose a uniform ?ow V ¼ 10i m=s, a doublet m ¼ 40 m3/s, and a vortex. Locate any stagnation points and ?nd the minimum pressure on the cylinder if the pressure of the standard atmospheric air is zero at a large distance from the cylinder.
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.896 and exits as a saturated liquid. the steam is
atmospheric air at 10 psia and 70 f dry bulb has a relative humidity of 50. if the air is sensibly heated at a
A sedimentation process is to be used to separate pulverized coal from slate. A suspension of finely divided particles of galena (lead sulfide SG = 7.44) in water is prepared. The overall specific gravity of the suspension is 1.48.
a piston-cylinder device contains 0.8 kg of an ideal gas. the gas is cooled at constant pressure until its temperature
A small, narrow, flat-bottomed fishing boat is loaded down with two crew member and a catch fish. The rear of the boat is a plane inclined at an angle θ of 75 degrees with the horizontal. Thirty centimetres below the water surface is a hole in the b..
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