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A WTP Operator is trying to size a pump that takes water from a WTP holding tank and sends it to a house on a hill above the plant. The operator's goal is to have 60 psi of water pressure entering the house. The operator knows that the head loss (major+minor) from the holding reservoir to the pump is three times the velocity head in the 8 inch diameter pipe, and the head loss from the pump to the house is seen times the velocity head of the pipe. If the pressure head at the inlet of the pump is -8ft and the velocity head entering the house is the same as the velocity head in the pipe at the pump, determine what pressure head is needed from the pump to achieve the operator's goal of 60 psi of water pressure. (hint: notice the velocity head at the house is the same as the velocity head in the pipe at the pump
Also, at the failure cross sections the diameters are found to be 0.731 in., 0.645 in., and 0.587 in., respectively. Determine the percent elongation and percent reduction in area of each specimen.
Colette Lake has a surface area of 103 ha and a mean depth of 8 m. The pH of the water is 7.6. The lake receives surface water from a lake upstream, rainfall, and diffuse groundwater input. Atmospheric inorganic N deposition is insignificant.
The tank has an inner diameter of 1.5 m and a wall thickness of 18 mm. If the pressure in the tank is p=1.20MPa, determine the force in the 16 bolts that are used to attach the cap to the tank. Also, specify the state of stress in the wall of the ..
Calculate the size of an anaerobic digester required to treat the sludge from a primary clarifier designed to treat 38,000 m3/d of sewage. The quantity of dry volatile solids removed by the plant is 0.15 kg dry solids/m3 sewage.
What is the average length of queue, the average time spent in the system, and the average waiting time in the queue?
A horizontal curve is being designed through mountainous terrain for a four-lane road with lanes 10 ft. wide. The central angle is known to be 40 degrees, the tangent distance is 520 ft., and the stationing of the tangent intersection (PI) is 2600..
At the moment when A passes P, the police car begines to accelerate at the constant rate of 6m/s^2 until a speed of 160km/h is achieved, and that speed is then maintained.
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
consider a cylindrical nickel wire 2.0 mm in diameter and 3 x 10^4 mm long. Calculate its elongation when a load of 300 N is applied. Assume that the deformation is totally elastic.
What are the quantitative measures of reliability (discuss measures for hardware, software, personnel, facilities, and data)?
A 50-m tape is used to measure between two points. The average weight of the tape per meter is 0.320 N. If the measured distance is 48.888 m, with the tape supported at the ends only and with a tension of 100 N, Find the corrected distance.
Energy transfer in mechanical systems, A wheel is 800mm in diamiter and has a mass of 1000kg. on a horizontal surface without skidding, the vehicle accelerates uniformly at 0.5m/s^2 for 5 seconds.
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