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An electric hot plate is maintaned at a temperature of 350 and is used to keep the solution just boiling at 95. The solution is cointaned in an enamelled cast -iron vessel of wall thickeness 25mm and enamel thickness 0.8mm. The heat transfer coefficient for the boiling solution is 5.5kw/m^2k, and the thermal conductivities of cast iron and enamel are 50 and 1.05w/mk respectively. Calculate the resistance to the heat transfer for unit area, and the rate of heat transfer per unit area.
the 50 kg wheel is a solid circular disk which rolls on the horizontal plane in a circle of 600mm radius. the wheel
a pulley 250 mm in diameter drives a second pulley 1000 mm in diameter by means of a belt. the moment of inertia of the
the truck is to be towed using two ropes. if the resultant force is to be 950 directed along the positive axis
A state runs a lottery in which 6 numbers are randomly selected from 40, without replacement. A player chooses 6 numbers before the state's sample is selected.
a piston-cylinder device containing argon gas undergoes an isothermal process at 100 c during which the pressure
the piston of a piston-cylinder device containing gas has a mass of 60kg and a cross-section area of 0.04m. the local atmospheric pressure is 0.97bar, and the gravitational acceleration is 9.81ms. determine the pressure inside the cylinder?
india has a land area of 2.97 x 106 km2 57 of which is cropland. if 5 of the cropland were dedicated to producing
A turbine takes in 2 kg/s neon at 27C and 200 kPa with negligible velocity. The produced work is 75 kW and 30 kW of heat leaks into the turbine from the surroundings. The neon exits at 100 kPa and 230 K. Find the exit velocity of the neon.
if ixiy in a given system of coordinates what can be concluded about ixy? what can be concluded about ixy if in
the wing area of the lockheed f-104 straight-wing supersonic fighter airplane is approximately 210 ft2. the weight of
steam at 10 mpa and 450 degrees c enters an adiabatic turbine at 80 ms and exits at 10 kpa 92 quality and 50 ms. the
the interior contents and materials of a small building weigh 25 tons and together they have an average specific heat
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