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1.Calculate following specific volumes: CO2: 10degrees c, 80 percent quality; Water: 4MPa, 90 percent quality; Nitrogen: 120K, 60 percent quality
2.Cwo schemes are shown for hanging a large number of flower pots. side by side on an outdoor porch. the flower pots are to have 72cm spacing. each flower pot weighs 126 N. determine the force in wire ab
3.The specified concrete strength fc for a new building is 6000 psi. Calculate the required average strength fc for the concrete ( a) if there are no prior test results for concrete with a compressive strength within 1000 psi of fc made with sim-ilar materials.
A spherical gas container having an outer diameter of 15 ftand a wall thickness of 0.90 in. is made of a steel for whichE =29*106 psi and v = 0.29. Knowingthat the gage
A 12 ft x 12 ft square area carrying a uniform load of 5000 lb/ft^2 s applied to the ground surface. Find the vertical stress increment due to the load at a depth of 25 ft below the center of the loaded area.
Include immediate and consolidation settlements, but ignore secondary compression. In your calculation, use three sublayers with thicknesses of 4 ft, 8 ft and 16 ft for the top, middle and bottom layers. Ignore any settlement caused by the dense s..
Assume: Suspended solids in effluent negligible Wastage is from aeration tank Yield coefficient = 0.4 Bacterial decay rate = 0.04 1/d Effluent BOD5 = 10mg/L F/M = 0.33 mg/mg*d BOD5 after primary settling = 150mg/L MLVSS = 1700mg/L MLSS = 1.4(MLVSS..
consider the steady viscous flow through a small horizontal tube. for this type of flow, the pressure gradient along the tube should be a function of the dynamic viscosity, the mean velocity and the diameter of the tube
Box I contains 3 red and 5 white balls, while Box II contains 4 red and 2 white balls. A ball is chosen at random from the first box and placed in the second box without observing it's color. Then a ball is drawn from the second box.
four laboratory-scale continuous-flow completely mixed activated sludge reactors have been operated using wastewater
If the flowrate is Q = 25 ft^3/s and the upstream depth is 2 ft, determine the downstream depth. Sketch the specific energy diagram and indicate its important characteristics. Note that the specific discharges are different.
Water under a gage pressure of 65 psi flows with a velocity of 12.5fps through a right-angled bend that has a uniform diameter of10in. The bend lies in a horizontal plane
If I have a block that has dimensions 5m*5m*5m and it is anchored in fresh water with a cord, the weight of the block is 2, 000 lbs, and the tension in the cord is 3,000lbs. What is the depth that the block will be in the water
In an irrigation system sometimes water must be pumped over long distances. Consider a system that consistes of a 1 m diameter, 2 km long commercial steel pipe, which connects a river to an irrigation canal.
The evaporation rate from the surface of a 3,650-acre lake is 100 acre-ft/day. Estimate the depth change in the lake in feet during a 1-year period if the net inflow to the lake is 25 cfs. Is the depth increasing or decreasing? What is the change in ..
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