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A well-insulated chamber is divided in two parts my a thin membrane. The left side, with a volume of 2000 cm^3, is filled with air at 27 degrees Celsius and 100 kPa. The right side, with volume 3000 cm^3, is initially evacuated. The membrane ruptures and air expands freely into the evacuated section to fill the chamber. Calculate the entropy generated in the process, in kJ/K. Use the first law and the second law in your analysis, and assume constant specific heat).
the basic barometer can be used to measure the height of a building.if the barometric pressure reading at the top and
The total force Fa + Fb exerted on the shelter is in the direction parallel to the line L and it's magnitude is 400 lb. Graphically determine the magnitudes of Fa and Fb.
a temperature scale is defined by the equation tsti lim pi-0 pspi1.36609 as in gas thermomery but now the reaumur
calculate the force and pressure acting across the pelvis and at the feet of a 150 lbm person. model the body using
why is communication with the customer so important? explain the twin dangers of making many changes or not enough
initially an insulated rigid tank contains 2.01 kg of water at 277.7oc and 1 mpa. a heater in the wall of the tank
determine the electrical power input to the pump. the density of water is 1kg/l.
a punching machine is driven by a motor which exerts a constant torque on the flywheel at a mean speed of 2 revs. if
if the force exerted on cable ab by the motor is f 100t32 n where t is in seconds determine the 50-kg crates velocity
a storage tank holds 75 cubic meters of a gas at 28deg c and a pressure of 130kpa. the gas appears to have a molecular
water is the working fluid in an ideal vapor power cycle with reheat. superheated vapor enters the first turbine stage
a rigid insulated vessel is divided into two compartments connected by a valve. initially one compartment occupying
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