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Experiments have shown that, for airflow at T8 = 35°C and V1 = 100 m/s, the rate of heat transfer from a turbine blade of characteristic length L1 = 0.15 m and surface temperature Ts, 1 = 300°C is q1 = 1500 W. What would be the heat transfer rate from a second turbine blade of characteristic length = 0.3 m operating at Ts.2 = 400°C in airflow of T8 = 35°C and V2 = 50 m/s? The surface area of the blade may be assumed to be directly proportional to its characteristic length.
some pollution like the now banned toxic pesticide ddt dichlorodiphenyldicholorethaneand its relative dde
a large stationary diesel engine produces 15 mw with a thermal efficiency of 40. the exhaust gas which we assume is air
Determine the tension developed in AB cable for equilibrium of the 350-lb crate. Determine the tension developed in AC cable for equilibrium of the 350-lb crate. Determine the tension developed in AD cable for equilibrium of the 350-lb crate.
The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is at 100 kPa, 17 C, and 600 cm2
a steam power plant is to be built to provide 10 mw of electricity. the turbine to be used has an efficiency of 45 and
some bacteria are propelled by biological motors that spin hair-like flagella. a typical bacterial motor turning at a
(a) The temperature profile as a function of radial position
If the crest of a hill has a radius of curvature i = 200ft, determine the maximum constant speed at which the car can travel over it without leaving the surface of the road. Neglect the size of the car in the calculation. The car has a weight of 3500..
six kilograms of co2 executes at carnot cycle in a piston-cylinder assembly. the minimum and maximum gas temperatures
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..
an airplane flying at a speed of 180 mph at an altitude of 40ft drops a large package at point a. the package has a
A ford ranger with a mass of 2410 kg is traveling at a velocity of 65 mph down a mount ion road in Colorado. The brakes fail and the driver elects to use a "run away" truck tramp to stop the pickup. What distance in feet will it travel if the ramp ha..
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