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A submerged stratum of clay has a thickness of 15m. The average water content of samples taken from the stratum is 54%, and the specific gravity of the solid constituents is 2.78. What is the effective vertical pressure, due to the weight of the clay, at the base of the stratum.
Determine the minimum force P to prevent a 30kg rod AB from sliding on a wall. The contact surface at B is smooth, whereas the coefficient of static friction between the rod and the wall at A is Us=0.2.
Jose is swinging a small bucket of water by a rope over his head at a constant angular speed of dot=10rad/s. The rope is Length L=1m and the combined mass of the bucket and water is 4kg.
A trapezoidal channel with a bottom width of 4 feet and side slopes 2:1 (H:V) and a bed slope of 1 percent conveys a discharge of 50,000 gpm. Assume n = 0.025. Compute the normal depth
Carbon dioxide at 30 C and 320 kPa absolute pressure expands isothermally to an absolute pressure of 170 kPa. Determine the final density of the gas.
Primary treatment removes ~25 percent of the BOD. Calculate the volume (m3) and approximate hydraulic retention time (h) of the aeration basin required to run the plant as a "high rate" facility (F/M = 2 kg BOD/kg MLSS-day).
Assuming the kinetic and potential energy effects to be negligible, determine D) the isentropic turbine efficiency E) the entropy at the exit of the turbine, in kJ/kg K F) the rate of entropy production within the turbine
The story: The Civil Engineering Department would like to have solar panels installed on the roof of Ghausi Hall to supply some of its electricity use - after all there is plenty of space on the roof and plenty of sun in Davis.
A pump, which has an efficiency of 75%, adds 15 m of head to the flow of 20 L/s of water through a 100 mm diameter pipe. determine The energy that must be delivered by the motor to the pump
A small town produces 0.15 MGD of wastewater. How many acres in size would an aerated lagoon need to be to treat this wastewater assuming a depth of 8 ft. and a detention time of 6 days
The house has a 1 m high dirt-floored crawl space. The emission rate of radon into the crawl space is reported to be 0.6 pCi/m2s. An exhaust system was added to provide 1 air exchange per hour (ACH) in the crawl space. The outdoor concentration of..
Compute the water table profile drawn in part B. Provide a detailed description of your methodology, and limit your solution to include only 4 image wells. Plot the profile, and provide drawdown amounts at X = -400 m, -200 m, -100 m, 100 m, 200 m,..
If a tractor with 23-hp, a max speed of 3.6 mph in 1st gear and an effieiciency of 92% is operated operated down a 4% slope and the rolling resistance is 80 lb/ton, what is the maximum external pull in each of the 4 gears.
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