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The microstructure of a copper-silver alloy at 775°C (1425°F) consists of primary and eutectic structures. If the mass fractions of these two micro constituents are 0.75 and 0.25, respectively, determine the composition of the alloy (expressed in wt.% Ag).
a model rocket is launched straight upward with a speed of 50 ms. i accelerates with a constant upward acceleration of
two 415000-lb locomotives pull 41 205000-lb coal hoppers. the train starts from rest and accelerates uniformly to a
the horizontal motion of the plunger and shaft is arrested by the resistance of the attached disk which moves through
in a diesel cycle the cutoff ratio is two and the compression ratio is eighteen. at state 1 the air is 14.7 psia and
an inventor has devised an atmospheric-pressure process to manufacture methanol. the inventor claims he has developed a
develop a matlab model to simulate a car that includes rolling resistance aerodyanmic drag and kinetic energy loss due
consider a gas-turbine cycle with two stages of compression and two stages of expansion. the pressure ratio across each
an ideal gas carnot cycle with air in a piston cylinder has a high temperature of 1200 k and a heat rejection at 400 k.
Electric power is to be generated by installing a hydraulic turbine-generator at a site 120m below the free surface of a large water reservoir that can supply water at a rate of 1500 kg/s steadily. Determine the power generation potential.
Air at 12 psia and 60F enters the jet engine of an aircraft flying at a velocity of 500 ft/s. Inlet area of the engine is 4 ft2. Exhaust gases leave the engine with a relative velocity of 900 ft/s. The fuel flow rate is only 2% of the mass flow rate ..
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
a body is in sliding contact with an unlubricated horizontal surface and is horizontally constrained by a spring. the
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