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A well-insulated rigid tank contains 5 kg of a saturated liquid-vapor mixture of water at 150 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is now turned on and kept on until all the liquid in the tank is vaporized. Determine the entropy change of the system during this process.
Heat transfer to air takes place partly at constant volume and partly at constant pressure, and it amounts to 1520.4 kJ/kg. Determine (a) the fraction of heat transferred at constant volume and (b) the thermal efficiency of the cycle.
an infinity long flat plate is initially at rest immersed in a liquid pool with properties n alpha tinfin. the plate is
a turbine is designed to extract energy from a water source flowing through a 10 cm diameter pipe at a pressure of 800
in a quasi-equilibrium process in a closed system a gas expands from a volume of 0.15m3 and a pressure of 120kpa to a
1 a cylinderpiston contains a saturated vapor r-410a at 10 c the volume is 10 l. the r-410a is compressed to 2mpa 60 c
determine the steady state rate of heat transfer per unit area through a 4.0 cm thick homogeneous slab with its two
a car that weighs 3000 lb is traveling on a hill at a constant speed of 40.1 fps. the crest of the hill has a radius of
the owner of a new home is considering the economics of current and proposed designs. the current design is the
a slotted arm rotates counterclockwise in a fixed circular path about an origin with a constant angular velocity of
an accident at a nuclear power plant causes the main valves to close and stop the main water flow that cools the
a two-dimensional diamond shaped supersonic airfoil has a total inclued angle of 15 degrees at its leading edge and its
packages are thrown down an incline at a with a velocitynbspof 1 ms. the packages slide along the surface abc to
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