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An air roamer contains 10 kg of air at 7 bar. A blow-off valve is opened in error and closed again within seconds, but the pressure is observed to drop to 6 bar. Calculate the mass of air which has escaped from the receiver, stating dearly any assumptions made. Calculate also the pressure of the air in the receiver some time after the valve has been dosed such that the air temperature has attained Its original
Water, SAE 30 motor oil, and honey flow through three 25 cm diameter pipes. Each pipe passes a volumetric flow rate of Q = 0,01 m3/s. Assume the densi- ties of these fluids are water = 1, 000 kg/m3, oil ; 850 kg/m3, and honey = 1,300 kg/m3, and the v..
The pressure is positive on the windward side of the hut and is negative on the leeward side. Determine the total horizontal shear Q on the foundation per unit length of roof mea- sured normal to the paper.
What will be his highest elevation? If his jump angle is increased to 30deg, will he stay in the air longer? Is his horizontal jump longer? Is this vertical maximum higher?
A spherical tank of radius 1 m containing radioactive material is buried in the earth. The distance between the earth’s surface and the tank center is 4 m. Heat release due to radioactive decay in the tank is 500 W. Calculate the steady temperature o..
Find the shear flow distribution in the thin walls of the section. All of the walls have a thickness of 8 mm. All ,the dimensions shown are in mm and are to the medians of the flanges and webs. Locate the shear center relative to the vertical web.
The project engineer, the shop foreman, and a consultant met to discuss the problem. The consultant proposed applying forward and back tension during rolling, the project engineer suggested reducing the reduction per pass, and the shop foreman fav..
1. convert 8720 gallons per minute to ft3sec.2. one gallon is a volume measure of 231 in3. determine the velocity in a
consider an air-standard gas turbine cycle with a regenerator heat exchanger. the operating compression ratio oand a
a solid cylinder of mass 5 kg and radius of 0.1m is released from on a ramp and rolls without slipping. if height of
a 30-ton engine exerts a constant horizontal force of 40103-lb on a train having three cars that have a total weight of
Carbon content of steel, A steel contains 55% alpha-ferrite and 45% gamma-ferrite or austenite at 750 degrees celcius. What is the carbon content of steel?
Suppose interest rates have risen lately and the proportion of executives with retirement investment money in the bond market may have dropped. To test this idea, a researcher randomly samples 210 exec- utives who have retirement funds. Of these, ..
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