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1.Water flows through a 250-mm diameter steel (C=120) pipe at a a velocity, V = 1.5 m/s. Using the Hazen-Williams equation, what is the head loss due to friction per 1000 m of pipe? What is the head loss that would occur through a 45 degree elbow?
2.A 2-ft diameter circular pipe has a Manning's n of 0.013 and a bed slope of 2.0 X 10^-3. What is the uniform flow rate in this pipe if it is completely full (Qf) in ft^3/s? What is the centerline uniform water depth (y0) in the channel if the flow, Q = 6.0 ft^3/s?
3.A 30 ft wide brick channel is on a slope of 6ft/mi. What is the flow Depth if the flowrate is 300 ft^3/s
4.Draw the shear and bending moment diagrams for the beam AB, and determine the maximum absolute values of the shear and bending moment.
A drinking water system treats a flow of 3000 gallons per minute. Consider disinfection of a bacteria by ozone with an inactivation constant of K=0.06/min. To reduce the number of bacteria from 400 bact/ml to 4 bact/ml.
Thirty six year old Johnson was in his last semester of his graduate program in Civil engineering. Father of two small children, he was anxious to get his degree so that he could spend more time with his family.
You arrive at your bus stop at some random point in the cycle, what is your expected wait time, w(t), to board a bus. Be sure to show your work or you will lose points. What is the standard deviation in w(t) given the fact that there is no bus wait..
If the 50 kg crate starts from rest and travels a distance of 6m up the plane in 4s, determine the magnitude of force P acting on the crate. The coefficient of Kinetic friction between the crate and the ground is 0.25
Compare the total reactor volume required for 90% removal of the same pollutant in a CSTR system that contains a single reactor against a system that contains three CSTR reactors of equal volume in series.
Drawdown at an observation well 15 m from the pumped well is 3.0 m, and drawdown at a second observation well 150 m away is 0.30 m. find the hydraulic conductivity of the aquifer.
Properties of frozen tissues have been measured as part of understanding the response of tissue to cryopreservation. In one set of experiments, frozen bovine carotid arteries were tested in uniaxial tension.
The concentration of BOD (an indicator of organic pollution) in a river just downstream of a sewage treatment plant's effluent pipe is 75 mg/L. If the BOD is destroyed by a first order reaction with rate constant equal to 0.05/day
A pendulum consists of a slender rod, AB, of weight Wr= 8.60 lb and a wooden sphere of weight Ws= 21.7 lb .(Figure 1) The length of the rod is d = 7.70 ft and the radius of the sphere is R = 0.500 ft .
Calculate the compacted cubic yards per hour if a compactor with a 5-ft drum width travels at 3 mph over a 10-in. lift of aggregate base course with 4 passes required to meet density specifications under average operating conditions.
What is the force of the water on a spillway whose upstream depth is 1.2m and whose downstream depth is 0.2m. The width of the spillway is 3m.
Apopulation of pheasants is released onto 6 islands. The pheasantcame from the mainland where predators are common. Three of theislands have predatory fox present (have-predators) and three donot have fox present (predator-free)
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