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1.A 300 acre parking lot has a runoff coefficient of 0.8 and a time of concentration of 40 minutes. Using the rational method (Q=CIA), what is peak Q if a 4"/hr rain falls for 10 minutes?
2.Coal has about 2% sulphur. how many kilograms of sulphur would be emitted from coal fired power plants in the united states in 1 year?(u.s electricity production is about 0.28*10^12 watts and coal has an energy content of about 30*10^6 j/kg. note that 1j=1w-sec)
3.Explain the slipping of atoms and the effect on material deformation.
4.Brine flood in a 1.9-in-long and 1.5-in-diameter core plug from the North Sea resulted in a stabilized pressure drop of 46.05 psi. The flood was carried out at 0.05 mL/min with brine viscosity of 0.443 cP. Determine the absolute permeability of this plug in millidarcies.
A weightless piston is placed on the liquid surface and the water level stabilizes (also in the small tube) to a level of h. Next, a weight of 10 kg is placed on the piston causing the liquid in the small tube to rise.
A hydraulic jump is observed to occur in a channel with a mild slope at a flow rate of 20cfs/ft. If the depth before the jump is 1 ft, determine the depth after the jump.
The dye appears 14 days later in an observation well 75 ft away from the injection point. Compute the seepage velocity and estimate the hydraulic gradient in the aquifer if the porosity of the soil is 42%.
question 1as an estimator in a construction firm you have been instructed to include only the costs relating to labour
Evaluate the pressure head at point a and determine the vertical effective stress at point b and evaluate the lateral pressurein the brown clay
IN in-situ bioremediation ,an electron donor such as acetateis typically added and is oxidized to provide the electrons for thereduction of CCl4, in ground water devoid of oxygen ,nitrate typically serves as the electron acceptor.using data fromhalf ..
Three point loads 10,000, 7500 and 9000 kN act in line 5m apart near the surface of a soil mass. Calculate the vertical stress at a depth of 4m vertically below the centre (7500kN) load.
A larger-diameter pipeline will cost $2.1 million installed, but its operating cost will be only $8000 per month. Which pipe size is more economical at an interest rate of 1% per month on the basis of an annual worth analysis
What is the maximum distance away that the navigation lights can still be seen by an observer standing at the shoreline The observer's eye height is 5'6" and the uppermost navigation light is 168 above the water.
assessment task critical review the decision making of a failed major constructionproperty project within the uk in the
the aeropress manual coffee and espresso maker is shown in figure 1. answer the following questions and clearly state
When in use, a fishing rod can be approximated to act as a cantilevered beam. Assume that the force (P) is applied to the end of the beam by a fish while the fisherman rigidly holds the other end of the beam.
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