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Initially, 0.05 kg of air is contained in a piston-cylinder device at 200 °C and 1.6 MPa. The air then expands at constant temperature to a pressure of 0.4 MPa. Assume the process occurs slowly enough that the acceleration of the piston can be neglected. The ambient pressure is 101.325 kPa. A) Determine the work (kJ) performed by the air in the cylinder on the piston. B) Determine the work (kJ) performed by the piston on the ambient environment. Neglect the cross-sectional area of the connecting rod.
a 2500 kg car traveling at 25.0 ms stops in a distance of 0.300 m after colliding with a tree. what is the acceleration
A cylindrical bar of aluminum 19 mm (0.75 in) in diameter is to be deformed elastically by application of a force along the bar axis. Using E=10 psi (Modulus of Elasticity), determine the force that will produce an elastic reduction of 1e-4 in. in..
a circular curve of highway is designed for traffic moving at 85 kmh. assume the traffic consists of cars without
question a pump station has been designed to lift water out of a 6 metre deep pit vented to atmosphere via a
we have a mixture that is 20 mol propane 35 mol n-butane and 45 mol n-hexane. if a flash drum operates at 400 kpa what
(a) determine how much ice has melted to bring the temperature of the beverage to equilibrium with the ice/water. (b) Determine the final equilibrium temperature
a particle travels around a circular path having a radius of 50 m. if it is initially traveling with a speed of 10 m s
electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water
if the u.s. fleet of vehicles suddenly became 15 more fuel efficient how much annual emissions of co2 would that
in a crank or slotted lever quick mechanism the distance between the fixed centre is 150 mm and driving crank is 75 mm. determine the ration of the time taken of cutting & return strake .
a civil engineer is designing a pipe to transport 178 m3s of water a distance of 4.35 x 104 m. to save capital costs he
A house is maintained at 1 atm and 24 C and warm air inside a house is forced to leave the house at a rate of 150 m^3/h as a result of outdoor air at 5C infiltrating into the house through the cracks. Determine the rate of net energy loss of th..
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