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The piston-cylinder assembly shown in the figure is fitted with a linear spring. The spring constant is k = 15 kN/m and the neutral position of the spring is when the piston is all the way to the left end of the cylinder, i.e., y = 0. Piston face area is 150 cm^2 and it is initially 30 cm from the left end of the cylinder. Superheated water vapor initially at 400 C is contained in the left side of the assembly and the right side is evacuated. The water is heated until th piston moves 20 cm to the right. Determine the mass of the water and the magnitude and direction of the work and heat transfer for the process. Sketch the process on a p-v diagram. Neglect any changes in kinetic and potential energy.
calculate the energy for vacancy formation in al given that the equilibrium number of vacancies at room temperature 25
a closed system contains 0.8 kg of air initially at 155 kpa with a volume of 0.45 m3. the system undergoes a polytropic
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
If the deflection of the gae fluid height, h, is 2 inches find the 1) velocity of the jet air and 2) the force exerted on the disk by the air.
a 200mm long 10mm dia. tensile sample experienced plastic deformation at a strain of 0.01. the applied load was 78.5
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5 lbm of air is compressed in a piston cylinder assembly from 1 bar 300k to 5 bar according to a polytropic process
a driver of a car is repeatedy driving around a roundabout with a diameter of 100feet . the driver is traveling around
Determine the rate of heat loss from the molten salt per meter length of the pipe.
find the momentum and buoyant length scales.
two resistors r1 120.0 ohms and r2 200.0 ohms are connected in parallel to each other then in series to a 12.0 volt
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