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The 60-W fan of a central heating system is to circulate air through the ducts. The analysis of the flow shows that the fan needs to raise the pressure of air by 50 Pa. The fan is located in a horizontal flow section whose diameter is 30 cm at both the inlet and the outlet. Determine the highest possible average flow velocity in the duct.
Find the final state inside the tank, A tank contains 2kg of nitrogen at 10K with a quality of 50%.Through a volume flow meter and valve, 0.5kg is now removed while the temperature remains constant.
a contact feedwater heater operates on the principle of mixing steam and water. steam enters the heater at 100 psia and
the walls of an insulated lunch box are made of inch-thick styrofoam with a thermal conductivity of 0.05wmk. if an ice
in a chemical processing plant glycerin flows over a 1 m long heated flat plate at free-stream conditions u infinity
the acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of
air at one atmospheric pressure and at 20degc flows across a 12 mm diameter sphere witha free stream velocity of 5 ms.
pump a can empty a tank in four hours while pump b takes only three hours to empty the tank. how long will it take to
a compressor receives air at 95kpa and 250c at low velocity. at the exit of the compressor air discharges at 1.52mpa
a load p 4000 lb acting at a point a of a beam produces 0.25 in at point b and 0.75 in at point c of the beam. find
the flywheel of a small punching machine rotates at 360 rpm. each punching operation requires 1500 ft-lb of work and it
oxygen is diffusing in a mixture of oxygen-nitrogen at 1 std atm 25degc. concentration of oxygen at planes 2 mm apart
a 2011 penny is thrown into a pool of water for luck. what is the force acting on the penny if it lands horizontally on
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