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A cylindrical vessel is pressurized to 1.7 MPa. The structure on which the vessel rests becomes damaged, resulting in uneven support that causes a twisting moment T0 of 8 (106) N-m on the vessel. The vessel has an outer diameter of 2.5 m and a wall thickness of 50 mm. The steel wall has a uniaxial yield strength of 600 MPa. Determine the factor of safety with respect to yielding
(a) assuming a maximum shear stress yield criterion and
(b) assuming a von Mises yield criterion.
The solubility of nitrogen gas in rubber at 25°C is 0.00156 kmol/m3 · bar.
Three-ply asphalt felt and gravel roof over 2in of insulation board is supported by 18in deep precast reinforced concrete beams with 3ft wide flanges. If insulation weights 3lb/ft 2 and the asphalt roofing weights 5.5lb/ft2, determine the total dea..
A car is traveling up a 3% grade on a road that has good, wet pavement. The engine is running at 2500 rpm. The radius of the wheels is 15 inches, the driveline slipage is 3% and the overall gear reduction ratio is 2.5 to 1
Now consider a 2-L soda bottle. If the CO2 gas in that bottle were to be released and stored in a container at 20°C and 100 kPa, determine the volume of the container.
A city of 60,000 people generates 50,000 tons of MSW per year. At current recovery and recycling rates, 21 percent of that MSW is recovered or recycled and the rest goes to a landfill.
Determine the number of gallons of paint needed to paint the outside surface of the water-supply tank, which consists of a hemispherical bottom, cylindrical sides, and a conical top. Each gallon of paint can cover 250 ft^2
If the mean and variance of discrete random uniform random variable X, are E(X) and V(X) respectively, what would the mean and variance of cX be in terms of E(X) and V(X) if c is a constant
A horizontal pre-stressing force of 500kN is applied to rectangler beam. the beam has a depth of 500mm and a width of 250mm. the force is applied at a distance of 80mm below the x-x axis.
Determine (a) the mass of the refrigerant in the tank and (b) the amount of heat transferred. Also, show the process on a P-v diagram with respect to saturation lines.
An engineer is designing a hydraulic lift with a capacity of 10 tons. the moving parts of this lift weigh 1000lbf. the lift should raise the load to a height of 6ft in 20 seconds. This will be accomplished with a hydraulic pump
No more than 12 units of TV, 40 units of radio and 25 units of direct mail are available. A minimum of 9 units of radio and 5 units of direct mail must be purchased.
A POTW treats 4 MGD. The SBR is 0.25 MG. How many tanks do you need? Assume that the tank already has 25% of Its volume in sludge and that the fill time is 3 hours, the react time is 2 hours (the total aeration time is 4 hours), the settle time is..
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