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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. two wells are located 50m apart and perpendicular to the flow and showing the water level difference of 1m. the hydraulic conductivity is 1*30^-3cm/s and the average contaminant concentration through out aquifer subjected to 200mg/L. the zone of flow and contamination is 100m long as measured to parallel to river.
Random J. Protocol-Design has been told to design a scheme to prevent messages from being modified by an intruder. Random J. decides to append to each message a hash of that message
compute the max possible moment at the centerline of the beam and the absolute moment in the beam.
an equal-tangent sag vertical curve is designed with the PVC AT STation 109 + 00 and elevation 950 ft, the PVI at station 110 + 77 and elevation 947.34ft,and the low point at station 110 + 50 . Determine the design speed of the curve.
With acid-catalyzed condensation of a molecule with two aldehyde groups that is suitable for forming 5- or 6-membered rings, are both carbonyls protonated right away at the same time
What are the effects of water pollution on the components of the hydrologic cycle?
What options do you have if your project is resource constrained? What are the advantages/disadvantages of these options?
time(in months) after a computer of brand is sold and needed repair is normally distributed with mean 36 months and standard deviation 4 month. if 1% of the super computer need services less than k months after they are sold, find the value of k.
Clients negative information. Do you think negative information should be communicated? If not, why not? If yes, should it be distributed to everyone or only to select people? Is there an ethical question about whether or not to share all information..
Will crack widths be affected by the air entrainment?
Prepare a three-year horizontal analysis of the income statement and balance sheet of your selected company. Discuss the importance and meaning of horizontal analysis. Discuss both the positive and negative trends presented in your company.
determine the angular acceleration of the spool and the acceleration of the trailer. The wheels have negligible mass and are free to rotate.
a horizontal cylindrical tank 4 ft in diameter and 10 ft long is full of water. find the work done in pumping the water to a point 4 above the top of the tank.
Determine the minimum distance from the diversion that a road sign should be located informing drivers of the temporary change on the highway. The letter height on the road sign is 5 inches.
The void ratio of soil in the borrow pit is 1.12. Estimate the volume of soil (cubic meters) that must be excavated from the borrow pit.
Suppose you are a member of an EPA enforcement team investigating the possible dumping of arsenic into Arbor Lake. You take water samples from the middle of the lake and find that the concentration is 90.0 ppb.
A vertical curve is to connect two tangents that intersect at station 50+00 and the elevation 500.00ft. The back tangent gradient is -4 percent, the forward tangent gradient is 2 percent, and the elevation of the curve at station 48+50 must equal ..
For the purposes of assessing an economy's growth performance, which is the more important statistic, real GDP or nominal GDP? Why?
A 600 MWe power plant has an efficiency of 36% with 15% of the waste heat being released to the atmosphere as stack heat and the other 85% taken away in the cooling water.
The total dissolved inorganic carbon (TIC) of a sample of groundwater is 8.33 mM. The temperature of the aquifer is 15C, the pH is 7.5, and the ionic strength is 0.05 M. What is the H2CO3, HCO3-, CO3 2-, and the partial pressure of CO2? [Use activ..
A three-span continuous beam ABCD with three equal spans supports a uniform load with intensity q. Determine all reactions of this beam and draw the shear force and bending moment diagrams labelling all critical ordinates.
A constant power of 1.5 hp is supplied to the motor while it operates with an efficiency of ε = 0.8. Determine the velocity of the 200-lb crate in 15 seconds, starting from rest. Neglect friction.
What are 3 of the equivalent fixed-point problems for f(x) = x2 - x -2=0?
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