Demonstrate that the process is internally reversible
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A 45.7 kg girl is standing on a plank that has a mass of 152 kg. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless supporting surface. The girl begins to walk along the plank at a constant speed of 1.5
A cylindrical graphite (pure carbon) rod of length 25 cm and initial diameter of 2 cm is inserted into a flowing air stream at 100 K and 2 atm total pressure. The flowing gas creates a stagnant gas boundary layer of 5 mm thickness around the exter
A jet of water leaves the nozzle at the end of a hose. The area and absolute pressure inside the hose are A1 and p1 and the area and absolute pressure of the jet leaving the nozzle are A2 and p2.
A 0.452 kg block of ice is compressed a distance of 0.13 m against a spring with a spring constant of 378 N/m and is released. Use conservation of energy to calculate the height of the block when it stops.
Develop expressions for the work and heat transfer in terms of the mass m and properties that can be obtained directly from the steam tables.
A uniform piece of aluminium is 4m by 4m and 2cm thick. A 1m by am square piece is cut out from it. The center of the cutout piece is at the coordinate (1,2) in meter. Calculate the x coordinate of the center of mass.
A patent application describes a device that at steady state receives a heat transfer at the rate 1 kW at a temperature of 167oC and generates electricity.
Construct the physical model based on the following. Let the suddenly applied pressure P be represented by a downward vertical force (fa) acting on a mass representing a lumping of the piston/press assembly.
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 248C and exits at 1 bar. If the refrigerant undergoes a throttling process, what is the quality of the refrigerant exiting the expansion valv
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