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A sand sample has a porosity of 38% and specific gravity of solids of 2.66. Find the void ratio and wet unit weight in lb / ft3 if the degree of saturation is 35%.
The dye appears 14 days later in an observation well 75 ft away from the injection point. Compute the seepage velocity and estimate the hydraulic gradient in the aquifer if the porosity of the soil is 42%.
If the BOD5 of the river below the mill outfall must not exceed 5 mg/L, what percent removal of organic matter (BOD5) is required by the mill to meet this requirement?
determine the value of Po, as a funciton of H, for these two investment alternatives to be equivalent at an interest rate of i=15% per year.
The gate is rectangular with a horizontal width of 2m perpendicular to the paper. For a depth h = 3m of water, calculate the required force exerted by the hydraulic cylinder to keep the gate just closed.
A 1-kg block of dry ice(solid CO2) becomes a gas at room temperature. calculate the volume of gas produced at 25 degrees celsius and 975 kPa.
An engineering student is driving on a level roadway and sees a construction sign 180 m ahead in the middle of the roadway. The student strikes the sign at 56 kph. If the student was traveling at 90 kph when the sign was first spotted, what was th..
If a mechanical device requires 450J of work to do 310J of work in lifting what is the efficiency of the device?
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
consider the cantilever beam-mass system. formulate and solve the minimum weight design.
At one point in a pipeline, the water's speed is 3.00 m/s and the gauge pressure is 4.00×10^4 Pa. Find the gauge pressure at a second point in the line 11.0 m lower than the first if the pipe diameter at the second point is twice that at the first..
A circular rc girder for the foundation raft of water tower has dia 10m.the udl load transmittedby 8 coloumn on te girder being 300 kn/m.the width of the beam is 500 mm and the over depth.
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