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A contaminant in water is traveling through a saturated clay layer under a hydraulic gradient of 0.15. The clay has a hydraulic conductivity of 2 x 10^(-7) cm/s, a moisture content of 19%, and a Gs of 2.65. a. estimate the time it would take for the contaminant to travel 20m. Give your answers in days and years. b. estimate how far the contaminant would travel in 5 years
a) Find the free-flow speed and jam density for this relationship b) Derive equations depicting the relationship between flow and density, and speed and flow. Plot the resulting curves. Show the values of free-flow speed, jam density, and capactiy..
You add 100 mg/L of glucose to pure water, then decide that this was a mistake and decide to remove it biochemically before you serve the water to your friends at a cocktail party. To remove the glucose, you seed the water with a harmless bacteria..
A 3.60-g lead bullet at 28.0 degrees C is fired at a speed of 230 m/s into a large block of ice at 0 degrees C, in which it embeds itself. What quantity of ice melts?
A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.
a. What is this investment's external rate of return b. What is the decision rule for judging the attractiveness of investments based on external rate of return c. Should Aerotron Electronics buy the water filtration system
After the Chernobyl accident, the concentration of 137Cs in milk was proportional to the concentration of 137Cs in the glass that cow consumed. The concentration in the grass was, in turn, proportional to the concentration in the soil.
A wood board with a 2in. by 4in. cross section is subjected to a tensile load of 100 lb. Determine the average normal stress and average shear stress developed in the wood fibers that are oriented at 30 degrees with the axis of the board.
Determine the normal depth in a trapezoidal channel with a bottom width of 6.4 ft and side slopes of 1 vertical to 2 horizontal. The discharge is 85 ft3/s. Manning's roughness factor is 0.025 and the channel bottom slope is 0.001
Determine the transformed moment of inertia for the beam using steel as the reference material. Express your answer in in^4 to the nearest 0.1 in^4.
Calculate the stress at failure of a concrete test cylinder with a measured diameter of 152.4 mm and a recorded load of 371,426N. Units of ksi.
A 1 meter diameter cylindrical mass, M, is connected to a 2 meter wide rectangular gate. The gate is to open when the water level, h, drops below 2.5 meters. Determine the required value for M. Neglect friction at the gate hinge and pulley.
what is effect of packing factor in self compacting concrete?
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