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Reconsider Prob. 4-9. Using EES (or other) software, investigate the effect of pressure on the work done. Let the pressure vary from 400 kPa to 1200 kPa. Plot the work done versus the pressure, and discuss the results. Explain why the plot is not linear. Also plot the process described in Prob. 4-9 on the P-v diagram.
Prob. 4-9
A frictionless piston-cylinder device initially contains 200 L of saturated liquid refrigerant-134a. The piston is free to move, and its mass is such that it maintains a pressure of 900 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 70°C. Calculate the work done during this process.
A Silane contains 90.31 % silicon and 9.69 % hydrogen by mass. The compound has a molar mass of 62 g/mol. Determine the compound's empirical and molecular formula.
The elevation of Y is 5265.879 ft. The elevation of X is required. Instrument at X: +S = 3.182,-S = 9.365,9.370, and 9.368. Instrument at Y: +S = 10.223; -S = 4.037,4.041, and 4.038. Find the elevation of X
Determine the allowable moment about the horizontal neutral axis that a timber beam with nominal size 50 X 100 can resist without exceeding the allowable stress of 10 MPa. The dressed size is 38.1 X 88.9 mm, I = 0.00000223m^4, and S = 0.0000502 m^3.
Two remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a cost of 2.2$ million per year.
highway patrol officer, you are patricipating in a speed trap. A car passes your patrol car which you clock at 55 mph. One and a half minutes later, your partner in another patrol car situated two miles away from you
A lagoon with volume 1200 m3 has been receiving a steady flow of a conservative waste at a rate of 100 m3/day for a long enough time to assume that steady-state conditions apply.
The pipe contains two 6 in steel elbows, two fully open gate valves, a fully open 90o angle valve, and a swing check valve. If the discharge end of the pipe is located 20 ft higher than the entrance, what is the pressure difference between the two..
Air enters an adiabatic nozzle at 4MPa and 400 K with a velocit of 25 m/s. Air at the exit is 2 MPa and a velocity of 160 m/s. Calculate entropy? Is this a reversable process?
The cylindrical wall of the tank is 6mm thick, has a 600mm inside diameter, and is made of steel with E = 200 GPa and v = 0.30. Determine the pressure in the tank indicated by a strain gage reading of 280*10^-6 in/in.
Using 1630.56 kN as the ultimate capacity determine the diameter of a drilled shaft pile that would have the same ultimate capacity and depth embedment (11.5 m) using the FHWA method. Neglect shaft resistance. Use a F.S. of 2
The railway crossing gate consists of the 100 kg gate arm having a center of mass at Ga and the 250 kg counterweight having a center of mass at Gw. Determine the magnitude and directional sense of the resultant moment produced by the weights about po..
Rope segment BC creates an angle of phi2 = 74.0^\circ with the floor and rope segment CD creates an angle theta with the horizontal. If both ropes BCA and CD can support a maximum tensile force T3 = 130 lb,
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