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1. A rectangular channel 5 m wide carries a discharge of 10 m^3/s at a uniform depth of 3 m. The channel is running on a slope of 0.0025 m/m. Estimate wall shear stress and friction velocity. Assume the density of flowing water as 1000 kg/m^3.2. A horizontal pipe 0.3 m in diameter has an available pressure drop of 100N/m^2 to drive a flow rate of 0.5 m^3/s across a length of 100m. What shear stress will be developed on the pipe boundary by this flow condition?
The temperature was 200C, and the void ratio (e) of the soil was 0.43. Calculate the "Coefficient of Permeability" in "centimeters per second" (Given, k = (QL)÷(A Δh t)).
Suppose X is a continuous random variable with probability density function, f(x)=4x^3 for 0
Design the pins so that the ledge can support Doug and Jeremy and eight others on each side of the building. Assume each person weighs 200 lbs.Pin properties: Ultimate shear strength = 100 lb/in^2
Calculate the equilibrium concentration of dissolved oxygen in 15ºC water at 1atm and again at 2,000m elevation.
what are biosynthetic pathways in cells A) anabolic B) catabolic C) usually produce more atp than they consume D) release monmorsinto the cytoplasm
incoming wastewater , with BOD5 equal to about 200mg/l is treated in well-run secondery treatment plant remove 90 percent of the BOD. you are to run five-day BOD test with a stander 300-ml bottle , using mixture of treated sewage and dilution wate..
Calculate the length and diameter of the reaction zone of an afterburner that treats 2000 acfm of polluted air (measured at 250 F). The gases in the after burner are at a temperature of 1400 F for a residence time of 0.50 sec.
Then calculate a 6% tax on the total and display the total amount owed (including the tax) Round your answer to two decimal points and include the dollar sign in your display as appropriate.
A wastewater treatment plant has a flow of 35,000 m3/day. Calculate the mass of sludge wasted each day (QwXw, expressed in kg/day) for an activated-sludge system operated at a solids retention time (SRT) of 5 days
Soil with a unit weight of 19.65 kN/m^3 is loaded on the ground surface by a strip load of 1.5 m wide. The strip load is 365 kN/m of wall length. Determine the vertical stress increment due to the strip load and the total pressure
List some of the advantages and disadvantages of rectangular primary sedimentation tanks over circular sedimentation tanks which must be considered prior to the selection
Water flows in a circular pipe of diameter D at a depth y (
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