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1.A sample of soil is compacted into a 9.44x10-4 m3 laboratory mould. The mass of the compacted soil specimen is 1.91 kg and its water content is 14.5%. Using a specific gravity of solids of 2.66, compute the degree of saturation, density and unit weight of the compacted soil.
2.There is a legend that the inventor of chess asked fora small payment in return for the marvelous game he had developed; one grain of rice for the first square on the chess board, two for the second square, four for the third square, and so on. there are 64 squares on a chess board.
a) how many grains of rice were placed on the 16th square?
b) how many grains of rice were placed on the 64th square?
c) how many grains of rice were placed on the chess board? this problem is intended to give you some practice working with very large numbers in excel. you may want to try using the scientific format. creating a series of values from 1 to 64 for the "square number" column is a good place to use the fill handle.
For each subcritcal, critcal, and supercritcal flows, comment on the values for the Froude number, the depth of the water channel, and the specific energy. How do these values compare to each other for each of the flow types
A saturated 100 cm^3 clay sample has a natural water content of30%. It's found that the shrinkage limit occurs when the water content is 19%. If the specific gravity of soil solids is 2.7,
You are in an old spy movie, and have been locked into a small room (volume 1000 ft). You suddenly realize that a poison gas has just started entering the room through a ventilation duct.
A gray silty clay (CL) is sampled from a depth of 12.5 feet. The "moist" soil was extruded ffrom a 6-inch high brass liner with an inside diameter of 2.83 inches and weighed 777 grams.
For a design storm specified for an urban area in Tennessee, the depth of rainfall is 2.5 inches (6.35 cm). Initial abstraction in depressions on the pervious and impervious areas was estimated at 0.5 inches (1.27 cm).
Determine the maximum grade on which passenger car A can travel without its total resistance exceeding that of car B traveling on a straight and level section of road.
a piece of stone m5kg is attached to a string with length r80 cm and is rotating in a vertical circular path with
The soil below the footings consists of a medium grain sand (SP) and water is located at a depth of 5 feet below the ground surface. The preliminary structural plan calls for a 10 foot wide footing located at a depth of 5 feet which must support a..
Estimate the contact time to achieve an effluent concentration of 200 fecal coliforms/100 mL using a Cl2 dose of 3 mg/L if the wastewater temperature is 28 oC. Assume the activation energy (Ea) at pH = 7.4 is 6,500 cal/mole.
a floating platform is supported at each corner by a hollow sealed cylinder 1 m in diameter, the platform itself weighs 25kN in air and each cylinder weighs 1.2kN per meter of length.
a small package is deposited by the conveyor belt onto the 30 ramp at a with a velocity of 0.8 ms.nbspcalculate the
A water treatment plant treats a continuous flow rate of 50,000 m^3/day and plans to build a 10,000 m^3 tank to house an additional treatment process. What will be the steady-state effluent concentration of an ideal CSTR
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