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Derive the finite difference equations for the forced-vibration analysis of a rectangular membrane, using m and n mesh points in the x and y directions, respectively. Assume the membrane to be fixed along all the edges. Use the central difference formula.
a thin plastic membrane is used to separate helium from a gas stream. under steady-state conditions the concentration
a spring is stretched in 1.5 in. by a 4 lb weight. let the weight be pulled down 3 in. below the equilibrium level nd
1000 kg of natural gas at 100 bar and 255 k is stored in a tank. if the pressure p specific volume v and temperature t
A vapor compression refrigeration cycle has a theoretical COP of 4.8 and provides 120,000 btu/h of cooling (same as 10 tons of cooling). The compressor is driven by a motor with an efficiency of 92%. Estimate the theoretical kW electrical demand that..
a rigid tank of volume v1 0.15m3 initially contains water at t1 50oc. the water is heated until t2 300oc and p2
consider 4 power transistors each dissipating 15 w are mounted on a thin vertical aluminum plate 22 cm x 22 cm in size.
Explain the difference between a jig and fixture which are used as work holding devices
A 4000 lb meteor hits the earth's surface at 15,000 ft/s. How much heat, in Btu, is generated in the collision?
often the assumption is made that the flow of a certain fluid can be less than 2. if air is flowing through a tube such
A 7.1cm external diameter, 6m long hot water pipe at 85 C is losing heat to the surrounding air at 15 C by natural convection with a heat transfer coefficient of 40 W/m2 C. Determine the rate of heat loss from the pipe by natural convection in Kw.
Determine the carbon concentration ratio, CC (x. t)/Cc,s, at a depth of 10 mm after 1 hour of carburization.
the collar has a mass of 20kg and is supported on the smooth vertical rod. the attarched springsare undeformed when d=0.5m determine the speed of collar after the applied force F=100N causes it to be displaced so that d=0.3m when d=0.5m, the colla..
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