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The dissolved oxygen of sample water is 1.5 mg/L. At 25 C, the dissolved oxygen of the dilution water is 8.25 mg/L. You are told the BOD5 of the sample is 130 mg/L. You have a target final dissolved oxygen of 3.0 mg/L (give yourself some leeway). What should the sample volume be?
Determine the coefficient of thermal expansion (in m/m.K) for the material over the temperature ranges - Determine i. the phases present
A rural freeway has an ideal free-flow speed of 120 km/h and two 3.6 m lanes in each direction, with right shoulder lateral clearance of 1.2 m. Interchanges are spaced approximately 5 km apart. Traffic consists of 10 percent trucks and buses and 8..
Groundwater moves through a sandstone porous media and is driven by a gradient of -0.05 directed at an angle of 60 degree counterclockwise from the x-axis.
Draw the shear diagram for the shaft. The bearings at and exert only vertical reactions on the shaft
a force is specified by the vector F=160i+80j-120k N.calculate the angles made by F with the postive x y and z axes.
If the difference in weight between the two baskets must greater than 15 lb they will not have the strength to operate the pulley. The King weighs 195 lb, the princess weighs 105 lb, and the prince weighs 90 lb.
The operating cost will be $10,000 per quarter with a salvage value of $25,000 after its 2-year life. Process B will have a first cost of $250,000, an operating cost of $15,000 per quarter and a $40,000 salvage value after its 4-year life.
Four pumps are to be used in 0.5-m diameter wells at the four corners of the site. Determine the required pumping rate. The aquifer has T = 1600 m^2/day and the wells each have a radius of influence of 600 m.
Water flows through the pipe contraction shown. for the given 0.2 m difference in the meter level, determine the flowrate as a function of the diameter of the small pipe, D.
The effective angle of friction (phi) was found to be 26 degrees for a normally consolidated soil. If the soil is tested in consolidated drained triaxial test under sigma3 = 60 kPa, what would be the failure deviatoric stress sigma1-sigma3 stress
Materials To Construct An Industrial Building, A small building can be constructed of steel or wood framing. A decision is made to use steel for fire resistance.
explain the necessity of super elevation in the design of horizontal curve also prove that rv=v2/{g(fs+e)}
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