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A coal-fired power plant is producing 10,000 kW (=10 MW) of electrical power. If the plant has a thermodynamic efficiency of 28%, how many kilograms (kg) of coal are being burned per hour to maintain this output? The heat of combustion of coal is 36,000 J/g.
Two plates are suspended vertically in 20 C atmospheric air forming a channel of width 18cm. The plates are 3m high and are maintained at a temperature of 275 C. If the channel is 5 m deep, find the convective heat transfer in the channel
A cylindrical oil-storage tank, whose diameter is 120 ft, is 60 ft deep when it is fully filled with an oil of density 55lbm/ft³. Its top is open to the atmosphere. What is the gauge pressure (psig) at the bottom of this tank?
a nozzle receives 0.1 kgs of steam at 10 bar and 400 degrees c with negligible kinetic energy. the exit is at 5 bar and
a speeder zooms past a parked police car at a constant speed of 70 mph. then 3 seconds later the police starts
a centrifugal compressor delivers 20 kgs of air at 0.32 mnm2 when running at 17500 rpm and absorbing 2800 kw. the inlet
a hydraulic system has a mechanical advantage of 4. If a smaller piston has a diameter of 5 inches what is the diameter of the larger piston?
a cylindrical metal rod length 2l radius r thermal conductivity k is embedded in a well-insulated wall such that half
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High school Yr 12 aeronautical Engineering Module - mechanics, PLease help- i seem to get the incorrect answer but didn't know where i have gone wrong?
a bug is on the rimof a disk of diameter 13 in that moves from rest to an angular speed of 70 revmin in 5.2 s. what is
refrigerant r-134a enters a 1 cm constant diameter tube at 400 kpa and 30 degree c. the refrigerant leaves the tube at
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