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A two-engine jet transport has a loaded weight of 90,000 lb and a forward thrust of 9800 lb per engine during takeoff. If the transport requires 4800 ft of level runway starting from rest to become airborne at a speed of 140 knots (1 knot = 1.151 mi/hr), determine the average resistance R to motion over the runway length due to drag (air resistance) and mechanical retardation by the landing gear.
a cycle consists of two isochoric and two isothermal process. the volume variation vmax vmin in the cycle is r fold
r-134a is contained in a sealed glass vessel at 50oc. as it is cooled droplets are noted condensing on the sidewalls at
a 100 pound ball is suspended from a wall by a rope that is pulled asided by a horizontal rope B and held so that rope A makes a angle of 30 degrees with the vertical wall. Find the tension in ropes A and B?
design a stationary steam power plant operating on an ideal closed loop rankine cycle that can deliver 85 mw of net
a piston-and-cylinder device contains 10 kmol of n-pentane at -35.5 c and 100 bar. slowly the piston is moved until the
Determine the minimum coefficient of static friction between the crate and the truck so that the crate does not slide relative to the truck.
a tank truck carries a cargo of liquid which fills 23 of the tank figure 3. the tank is open tonbspthe atmosphere. if
consider a 210mw steam power plant that operates on a simple rankine cycle. steam enters the turbine at 10mpa and 500oc
Describe the main kinds of social mechanisms that are used by people to communicate and collaborate.
the upside-down steel a frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using
i would like to have this problem solved. the problem is here in the attachment. if you have anymore information please
the 10 pounds weight is supported by the cord AC and roller and by a spring.if the spring has unstreched lenngth of 8 inches and the weight in equilibrium when d=a inches.determine the stiffness K of the spring?
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