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A rigid tank contains 1 lbmol of argon gas at 400 R and 750 psia. A valve is now opened, and 3 lbmol of N2 gas is allowed to enter the tank at 340 R and 1200 psia. The final mixture temperature is 360 R. Determine the pressure of the mixture, using (a) the ideal-gas equation of state and (b) the compressibility chart and Dalton's law.
A crane is placed along the easterly sideline of a building, but 25 feet from the front of the building. The building to be erected is a 6 story building that is 100 feet wide by 50feet deep. YOu may assume that each story is 15 feet.
The river flow at an upstream gauging station is measured to be 1500 m3/s, and at another gauging station 3 km downstream, the discharge is measured to be 750 m3/s at the same instant of time.
What is the most significant difference between “free” jets and flows in confined structures (nozzles, pipes, etc.) in terms of formulation of force terms ÓF(i.e. left hand side) of the momentum equation? Assume all flows are subsonic and neglect the..
Two triaxial compression tests were performed on two prepared samples of the same limestone. At a confining pressure of 2000 psi, the first sample failed at 9000 psi. Then at a confining pressure of 5000 psi, the other sample failed at 21000 psi.
Fixed GPS broadcast stations enable users to make differential measurements to other points whose positions are needed. In the US, there are two such networks two such networks of broadcast stations, name one (blank)
A mining firm makes annual deposits of $250,000 into a reclamation fund for 20 years. If the firm must have $10 million when the mine is closed; what interest rate must the investment earn
An isolated system contains an incompressible substance with heat capacity C = kT, where k is a constant. The system is initially divided in two parts, with 1/3 of the mass at T1 and 2/3 of the mass at T2.
Determine the required spacing of joists supporting 3/4in. thick plywood that is to support an 8 in. concrete floor slab, assuming a construction live load of 50 psf and a formwork dead load of 10 psf. Use plywood with f' b= 1930 psi.
An Engineer is designing a hydraulic lift with a capacity of 10 tons. The moving parts of this lift weigh 1000 lbf. The lift should raise the load to a height of 6 ft in 20 sec.
Steam at 100 bars and 550°C enters a turbine operating in steady-state with a volumetric flow rate of 460 m^3/min. 22% of the entering mass flow exits the turbine at 10 bars
Viscous flow in a pipe is to be tested in the laboratory using both air and water. Assume that the velocities (Vair and Vwater) are such that the air flow is dynamically similar to the water flow. Determine the ratio of the velocities, Vair/Vwater, i..
two wooden members of uniform rectangular cross section of sides a = 100 mm and b = 60 mm are joined by a simple glued joint as shown. knowing that the ultimate stress of the joint are 1.26 MPa in tension and 1.50 MPA in shear and that P= 6kN
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