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The main bearing on an engine crankshaft is lubricated with engine oil. The torque due to friction T0 depends on shaft diameter D, rotational speed, lubricated viscosity, and density. Use dimensional analysis to derive an expression for torque.
a stone of 20 kg of mass is held 15 m above a tank containing 200 kg of water. the stone water and the air are at the
steam flows steadily through an adiabatic turbine.the inlet conditions of the steam are 6 mpa400 degree celcius and 80
a spherical communication satellite with a diameter of 2.5m is orbiting around the earth. the outer surface of the
A spacecraft is in orbit around Earth with an eccentricity of e = 0.25 and apogee altitude of 5000km. At the orbit's perigee, the spacecraft is slowed by the application of braking rockets, which produce a thrust of 1.0 X104 N, to put the spacecraft ..
air enters an evaporative cooler at 1 atmosphere 36degc and 20 percent relative humidity at a rate of 4 m3min and it
a small high speed turbine operating on compressed air produces a power output of 100 w. the inlet state is 4 bar 50
As shown, a 150 lb bungee jumper wants to jump from the top of a 630 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 108 lb/ft, what should the bungee cord's relaxed length, l, be for t..
an insulated rigid tank is divided into two chambers by a membrane. chamber a has a volume of 3 ft3 and intially
consider a steam power plant that operates on the ideal reheat rankine cycle. the plant maintains the boiler at 7000
Ammonia is to be isothermally compressed in a specially designed flow turbine from 1 atm and 672 R to 50 atm. If the compression is done reversibly, compute the heat and work flows needed per lb-mole of ammonia by the following methods;
A piston-cylinder assembly initially contains 4 mol of substance X in vapor phase at 0.8 bar and 373 K. The vapor is compressed isothermally and reversibly until the first droplet of liquid forms.
a derive an expression for temperature distribution t r in the uo2 fuel of a pwr. assume that temperature of the
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