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Hydrogen is cooled in an isobaric heat exchanger from 5000. to 527 R at 20.0 psia. The heat transfer occurs across an isothermal wall at 500. R inside the heat exchanger.
Use the generalized charts to determine the hydrogen's heat transfer and entropy production rates per unit mass flow rate.
Consider 0.8 grams of air (which may be assumed to be an ideal gas) at 295 K and 1.5 bar trapped in a rigid tank. An electrical heater is operated for 30 seconds. During this time the voltage across the heater is 12 V and 0.6 amps pass through the re..
The 1200-lb trunk has a cen- ter of gravity at G.The felling notch at O is sufficiently large so that the resisting moment there is negligible.
Model the earth as a sphere with a diameter of 8,000 miles. Using 14.7 psia as the average pressure at the earth's surface and ignoring variation in g with altitude, estimate the weight of the earth's atmosphere in lbf, and its mass in lbm.
A vertical cylindrical tank 2m diameter has, at the bottom, a 0.05m diameter sharp edged orifice for which the discharge coefficient is 0.6. If water enters the tank at a constant rate of 0.0095 cumecs find the depth of water above the orifice when..
a 1600 kg supercar executes a rolling start and accelerates rapidly. the road is horizontal. neglect tire resistance
a knoop microhardness measurement was made on a sample that resulted in a khn of 481when a load of 5120 kg was applied.
Five kilogram of saturated water vapor at 300 kPa is heated at constant pressure until its temperature reaches 200oC. Calculate the work done by the steam during this process.
Assuming that the jet accelerates the air to a speed vrel relative to the jet's center of mass G, draw a control volume and find an expression for the thrust produced by the engine.
The disk has mass m, radius r and moment of inertia IG = mr2/2. The spring constant is k = mg/r. Find the velocity of the centre of the disc as a function of x
calculate the corresponding pressure angle and radius R for points on the involute. Plot the series of points in polar coordinates and connect with a smooth curve to give the involute.
air enters the compressor section of a turbojet engine at 15 c and 0.1 mpa at a rate of 100 m3min. the air leaves at
What is the maximum allowable pressure if a factor of safety of 4 is to be used and what pressure would a strain of 40 pc indicate?
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