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An unconfined, gravel-sand aquifer has a porosity of 0.23, and a hydraulic conductivity of 1000 m/day. Two monitoring wells are 260 m apart, and the difference in their water levels is 0.3 m.
What is the Darcy velocity of the groundwater?
What is the average linear velocity of the groundwater?
How long would it take the groundwater to travel from one well to another?
How long would it take the hydrophobic contaminant trichloroethene (TCE), which has a retardation factor of 3, to travel between the wells?
Knowing that each member has a 2 3 4-in. rectangular cross section and that each pin has a 12 -in. diameter, determine the maximum value of the average normal stress (a) in member BE, (b) in member CF.
Your boss has assigned you the job of designing a rapid-mix tank for the new water treatment plant for the town of Waffle. The design flow rate is 0.050 m^3/s. The average water temperature is 8 degrees celcius.
A stone A is dropped from rest down a well, and in 1 second another stone B is dropped from rest. Determine the distance between the stones another second later.
The steam flow rate entering the pipe is 2500kg/hr. Due to heat loss from the pipe to the surrounding air (at 25 C) 20 kg/hr of condensate is formed in the pipe and removed at the end of the pipe.
what is the second year book value for equipment with an initial cost of $11,000, a salvage value of 1,000 and a recovery period of 5 yrs for A. straight line depreciation. B. Double declining balance. C. MACRS
Four liters of water are equilibrated with a gas mixture containing carbon dioxide at a partial pressure of 0.3 atm. Henry's law constant for H2CO3* solubility is 2.0g/L-atm.
What is the salt usage for each regeneration if the system regenerated every 10 days? What size resin tanks (diameter, height) would be required for a duplex system with no redundancy?
Will crack widths be affected by the air entrainment?
Are there any situations when parallel flow option may be preferred instead of a counter flow heat exchanger
hydraulic conductivity of soil is .009cm/sec at room tmeperature of 28*C. what would be the coefficient of permeability at 20*C
A nozzle is designed to linearly accelerate the fluid from V1 to V2 (i.e., V = ax +b, where a and b are constants). Determine the local acceleration, the convective acceleration, and the total acceleration at point 1 and 2 at t = 0.
A horizontal pre-stressing force of 750kn is applied to a rectangular concrete beam to be used as a structural member of a traffic bridge. The beam has a depth of 500mm and a width of 250mm. The force is applied at a distance of 80mm below the sec..
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