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An air conditioner operating at steady state maintains a dwelling at 20 degrees Celsius on a day when the outside temperature is 35 degrees Celsius. Energy is removed by heat transfer from the dwelling at a rate of 2800 J/s while the air conditioner's power input is .8 kW. Determine (a) the coefficient of performances of the air conditioner and (b) the power input required by a reversible refrigeration cycle providing the same cooling effect while operating between hot and cold reservoirs at 35 degrees Celsius and 20 degrees Celsius, respectively.
drag measurements were taken for a sphere with a diameter of 5 cm moving at 4ms in water at 20 degrees celsius. the
consider an air-water mixture of total pressure of 100 kpa and temperature of 20c and relative humidity of 59 that goes
determine the smallest allowable value of the coefficient of static friction between the collar and the rod if the collar is not to slide when a) a =15° b)a = 45°. Indicate for each case the direction of the impending motion.
a cylindrical casting is 0.4 m in diameter and 0.6 m in length. another casting of the same metal is rectangular in
calculate the work necessary to compress air in an isolated cylinder piston with an intial volume of 6.0ft3 and a final
a 90-lbf triangular plate is supported by two cables as shown. when the plate is in position nbspshown the angular
A 90-N force is applied to the control rod AB as shown. Knowing that the length of the rod is 225 mm, determine the moment of the force about point B by resolving the force into horizontal and vertical components.
1. graphically verify moseleys law for the k beta1 lines of cu mo and w.2. acalculate the mass an linear absorption
Please find the mass of gasoline fuel injected into each cylinder in each working cycle.
approximately how many pounds of downward pressure is placed on a piston in an internal combustion engine at the moment of ignition? I know this will vary some depending on the type fuel, the size of the combustion chamber and ect.
A power outage occurred at a water distribution pump station. Before the power outage the station was pumping with one pump at 6,000 gpm in a 18" diameter Steel Pipe
a plate of mass m is suspended between two opposing jets each of area a velocity vo and density d. the plate is
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