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A two-compartment water tank contains saturated water vapor at 4 MPa on one side and water vapor at the same temperature, but at 0.1 MPa in the other compartment. Each compartment has a volume of 0.2 m³. A valve connecting the two compartments is opened, and the water is allowed to come to equilibrium adiabatically. Calculate the entropy change for this isolated system.
what is the flow rate required to cool and maintain 0.5 x 0.5 x 0.5 m3 volume of air at 297 K to 199 K, using nitrogen at 199 K
consider uniform potential flow past an ellipse with thickness ratio t. use an appropriate joukowski transformation to
moist air at 30 degrees c 2 bar and 50 relative humidity enters a heat exchanger operating at steady state with a mass
consider the thin-walled beam section illustrated in the figure below. the beam has a vertical load of v 500 kn acting
5m3 of air at 2bar 270c is compressed up to 6bar pressure following pv1.3 constant. it is subsequently expanded
a diesel engine uses 54.4 kg of fuel oilh of calorific value 45 mjkg. the thermal efficiency of the engine is 25.
a two vehicles travelling on a road in the same direction collide. vehicle 1 has a mass 1200kg and is travelling at
a file cabinet weighing 230lb is being pushed to the right with a horizontal force p applied a distance h from the
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
Determine the average luminous exitance of the opaque interior surfaces of the room - what is the reflected component at this point?
assume steady-state one dimensional heat conduction through the symmetric shape shown. assuming that there is no
a piston-cylinder device contains 0.15kg of air initially at 2mpa and 350oc. the air is first expanded isothermally to
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