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A heat engine supposedly receives 500 kJ/s of heat from an 1100-K source and rejects 300 kJ/s to a low-temperature sink at 300 K.a. Is this possible or impossible?b. What would be the net rate of change of entropy for this system?
0.25 kg of red-hot 700 c coals are taken from the fireplace and left in the middle of a room. the room is 3 m x 4 m x
if k 0.410-3 ft-1 determine d such that a car driving at constant speed v0180mph experiences at b an acceleration with
a power washer used to clean the sidingof a hosue has water entering through a hose at 20c 1atm and avelocity of 0.2ms.
Friction between the piston and cylinder wall can be neglected because the process occurs so slowly. For the air, determine the initial and final pressures in kPa and the boundary work for the process in kJ.
a brass rod 100 mm long and 5 mm in diameter extends horizontally from a casting at 200 degree c. the rod is in an air
compute the overall thermal resistance of a wall made up of 100 mm brick 1920 kgm3 and 200 mm normal weight concrete
a laboratory furnace wall is constructed of 0.20m thick fireclay brick having k11.2 wm-amp176c. this is covered on the
1 kmol of n2 gas ideal is contained in a piston initially at 300k with a volume of 0.1 m3. the piston cylinder is well
a steam turbine operates with 1.6 mpa and 350 degree c steam at its inlet and saturated vapor at 30 degree c at its
a transparent rigid container is filled with 2 gallons of water. initially the pressure is measured to be 10.2 psig
a large coal fired power plant has an efficiency of 45 and produces net 1500 mw of electricity. coal releases 25000
How often would the sample have to be taken - If the objective was to determine the average value of the material in the bunker, how could this be done by making one measurement?
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