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A truck spils 1 gallon of benzene into an aquifer with an area= 50ft^2 Benzene has a solubility of 1750 ppm, and a specific gravity of 0.873. The aquifer ahs a porosity of 0.25, a hydraulic gradient of 0.004 and a hydraulic conductivity of 1000 gpd/ft2.
a. what is the discharge through the aquifer in gpd?
b. How long will it take the water in the aquifer to travel 100 ft?
c. How long will it take to remove 99% of the benzene from the aquifer? Assume that the volume of aquifer affected is 500 ft^2
The forces acting on the sailplane are represented by three vectors. The lift L and drag D are perpendicular. The magnitude of the weight W is 500 lb. If the magnitude of the resultant of the three forces is 0
The cable from point A to point B exerts a 900 N force on the top of the television transmission tower that is represented by the vector F. Express F in Cartesian vector form using the coordinate system.
Cylindrical, steel bar stock (density = 7833 kg/m3, Cp = 0.465 kJ/(kg C)) of 10-cm diameter is heat-treated by drawing it at a velocity of 3 m/min through a 6-m-long furnace maintained at 900C.
The soil will be excavated from the borrow pit, moistened to increase the water content to 13.5% (assume i will not change the volume of solid mass) and then compacted to a final dry unit weight of 118 pcf.
What is the maximum load that a .75" diameter steel cable can hold if the UTS of the steel is 145,000 PSI and a safety factor of 1.5 is required.What is the stretch of the 360" cable under this load
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water is flowing at a velocity of 10ft/s and a depth of 10ft in a channel of rectangular section. find the change in depth and in absolute water level produced by a smooth upward step of 1 ft. a smooth downward step of 1 ft in the channel bed.
Determine the force required to lift the block of stone that weighs 200 lb. The rollers are frictionless and the static coefficient between all other surfaces is 0.3. Neglect the size and weight of the wedges.
A model of a submarine, at 1:15 scale, is to be tested at 0.8 ft/s in a wind tunnel at standard at mospheric pressure, while the prototype will be operated in seawater. Both the air and water are at 10 C (50 F).
Assume a time to peak of 15 minutes and the unit peak discharge is 7.0 cfs/in, using the Gamma Function Unit Hydrograph what is the unit discharge at 20 minutes
If friction between the cars and the rails is neglected, what were the magnitude and the direction of the velecity of the cars after the collision?
A 2000-lb wheel load is to be supported by aggregate over soil with a maximum bearing pressure of 1000 lb/sqft. What depth of aggregate is needed if the angle theta is 40 degrees
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