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water flows from a lake into a steep natural channel. the water surface elevation of the lake is 97.0 with respect to the datum. the channel properties are given below. determine the flow rate in the channel Hint: Construct a table of top widths, and areas. determine the critical depth by interpolation. Elevation ft 91.0 91.5 92.0 92.5 93.0 93.5 94.0 94.5 95.0 95.5 96.0 96.5 97.0 Top Width ft 0 9 15 19 18 19.5 22 27 29 31 34 37 40
Determine the number of completely mixed bioreactors (detention time of 45 min each) that would be required to meet the phenol discharge limit of 5 mg/L. The first-order removal rate constant is equal to 6.1 hr -1
Model tests are to be performed to study the flow through a large check valve having an inlet diameter of 2 feet and a volume flowrate Qp of 30 cfs. The working fluid in the model is water at the same temperature as that in the prototype.
using darcy's law compute the quantity of flow, seepage velocity and contaminant loading of the river. ground water is flowing through unconfined uniform 3m thick sand aquifer and discharging to river.
A 1600 ft long sag verical curve (equal tangent) has a pvc at station 1200+00 and elevation o 1500 ft. the initial grade is -3.5% and the final grade is 6.5%. determine the elevation and stationing of the low point, pvi and pvt.
What is the cost breakdown structure(CBS)? What are its purposes? What is included (or excluded)? How does it relate to a work breakdown structure (WBS)?
for a laminar flow of a newtonian fluid in a tube of a circular cross section, show that the ratio of mean shear to the wall shear rate is 2/3
The tank has an inside diamater of 100 cm and will be subjected to a maximum internal pressure of 820 kPa. The allowable tensile stress in the wall is 83 MPa, and the allowable tensile stress in the weld is 55 MPa.
Evaluate company performance in relation to GRI standards and comment on Stigler's theory.
Introduction to management science, The Dynaco Manufacturing Company produces a particular product in an assembly line operation. One of the machines on the line is a drill press that has a single assembly line feeding into it.
The boat is travelling along a circular path with a speed v=(0.0625t). Determine the magnitude of its acceleration when t=10s
A tub of a washing machine is rotating at 50 rad/s when the power is turned off. If it takes 15s for the tub to come to rest, determine (a) the constant angular deceleration, and (b) the total number of revolutions the tub makes.
a storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank.
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