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Air undergoes a poly tropic process in a piston-cylinder assembly from P1 = 1 atm, T1 = 70ºF to P2 = 3 atm. Employing the ideal gas model with constant specific heats at 80ºF, determine the work and heat transfer per unit mass, in Btu/lbm, if
1. n = 1
2. n = the specific heat ratio, k
argon in the amount of 0.6 kg fills a 0.05 m3 piston cylinder device at 550 kpa. the piston is now moved by changing
Your task is to find a structure / machine that has some biological component to it from the world of nature or sports and analyse it using math based equations.
a subway train is being designed for operation between two stations a and b which are 2 km apart. if the maximum
Calculate the change in free-energy associated with the formation of a critical spherical nucleus in pure liquid nickel that is 200 ºC under cooled. Properties of Nickel: Heat of Fusion 2660 J/cm3; Surface Energy 255x10-7 J/cm2 ; Freezing Temperatur..
the minto wheel is a power-producing device activated by evaporating and condensing a work substance. the only energy
water flows at a rate of 20 ls through a horz pipe dia .03 m. the pressure drop across the valve in the pipe is
Nitrogen gas at 65kPa and 7C enters an adiabatic diffuser steadily with a velocity of 210 m/s and leaves at 119kPa and 22C. Determine the exit velocity of the nitrogen. the ratio of the inlet to exit area
a tank with a volume of 1 m3 is filled with 10 kg of water. with a pressure of 1.1 mpa in the tank the water is a
an adiabatic throttle valve operates in a steady-state steady-flow condition with r-134a refrigerant at a flow rate of
a 4000 lb car traveling at 60 mph decelerates at a constant rate and comes up to a stop over a distance of 200 feet.
you are to design an air compressor with an inlet pressure of 100 kpa an inlet temperature of 300 k and anexit pressure
the owner of a new home is considering the economics of current and proposed designs. the current design is the
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