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What is coefficient of lift (CL) of an airplane weighing 2200 lbs with wing surface area of 150 ft2, in steady level flight, at sea level density (0.0023 slugs/ft3), flying at 160 kts?
during a constant-pressure process it is found that the change in entropy is equal to 0.25cp. if the cp is constant and
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr. When the steam exits the boiler it's temperature is 1000°F and its pressure is 1400psi...
water enters a smooth-thin-walled tube of 1 inch in internal diameter at 50f and leaves at 150f. heat is supplied to
find velocity profile for viscous steady-state fully developed flow in a long infinite pipe with a rectangular
A petroleum engineer estimates that the present production of 400,000 barrels of oil during this year from a group of 10 wells will decrease at the rate of 15% per year for years 2 through 10. Oil is estimated to be worth $25 per barrel. If the inter..
the thermal efficiency of an internally reversible heat engine is 62 percent. the working fluid at 23 degrees c rejects
a contractor is required to prepare a soil surface so that its planar and the normal direction to the surface is within
how much heat in kj must be added to 2 kg of steam initially at t1 300 degree c contained within a rigid volume to
consider an air-water heat exchanger. air flowing steadily at the rate of 0.5 kgs enters the heat exchanger at 100 kpa
a thin metal disk of mass m2.00 x 10-3 kg and radius r2.20cm is attached at its center to a long fiber. when the disk
a 6 lb collar is constrained to travel along a frictionless vertical ring of r3 ft. the spring is attached to the
when the air temperature in an automobile tire is 25oc the pressure gage reads 210 kpa. if the air volume in the tire
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