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A confined aquifer 30.0m thick has been pumped from a fully penetrating well at a steady rate of 5,000 m^3/day for a long time. Drawdown at an observation well 15m from the pumped well is 3.0 m and a drawdown at a second observation well 150 m away is 0.30 m. Find the hydraulic conductivity of the aquifer.
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.
A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.66ft/sec2. What is the object's mass in kilograms?
A suction device is being designed based on the Venturi principle to life objects in submerged water. The operating water temperature is 50C. The suction cup is located 1.3 m below the water surface, and the Venturi throat is located
A contractor is considering the purchase of an earthmover to avoid the cost of a rental unit. The earthmover costs $350,000 initially and will cost $7000 per year to store and maintain.
Truck B has an 8000-lb single axle and a 43,000-lb tandem axle. On a flexible pavement with a 3-inch hot-mix asphalt (HMA) wearing surface, a 6-inch soil-cement base, and an 8-inch crushed stone subbase, which truck will cause more pavement damage
If the amount of heat transfer in the HE unit is 2460 kJ per kg of steam, what is the magnitude of shaft work obtained from the turbine in kW?
A one-story, 50-m wide X 90-m long manufacturing building is to be built on a site underlain by medium dense to dense silty sand with occasional gravel
on a summer day when the wind speed in 3 ms a tank truck loaded with liquid chlorine is involved in an accident that
If the rate of travel of the ram u is 0.5 fps, find the frictional resistance, F when 6 ft of the ram is engaged in the cylinder.
A bar (wih bending rigidity EI) is supported at A and B with length 2a. The bar is fixed at B (length=2a) with a pin support at A (length L=0). Additionally, at A is a torsion spring (spring constant Ca = EI/a) and an extension spring is attached at ..
Two transmission belts pass over sheaves welded to an axle supported by a thrust bearing at B and a journal bearing at D. The sheaves A has a radius of 50mm, and the sheave at C has a radius of 40mm.
A three point bending test is performed on a glss specimen having a rectangular cross section of hight d =6 mm and width b = 12 mm the distance between support points is 45mm.
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