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A 5 inch (inside diameter) well is to be placed to a total depth of 60 m in an unconfined sand aquifer. The saturated unit weight (γsat) of the sand is 20.0 kN/m3 and the anticipated depth to water in the well during pumping is 20 m below ground surface. Would a #30 slot stainless steel screen (2.0 m long; located at the bottom of the well) have sufficient collapse strength for this application?Notes:- assume that the water level inside the well will be the same as the water level immediately outside the well- to obtain a horizontal soil pressure, the vertical soil pressure (stress) at a given depth must be multiplied by a coefficient of earth pressure, Ko (recall basic soil mechanics ...). Assume this coefficient has a value of 0.50- use a factor of safety of 1.5
After falling from rest from a height of 32 m, a 0.45 kg ball rebounds upward, reaching a height of 22 m. If the contact between ball and ground lasted 1.5 ms, what average force was exerted on the ball?
Near the point (x, z) =(3,2) in a flow with a zero y-component (v=0), the velocity component are described by u =3x-3z, and w = 6-4z+ x. The velocities u and w are in m/s and are in the x- and z- directions, respectively.
The skateboard rider leaves the ramp at A with an initial Velocity Va at a 30 degree angle. If he strikes the ground at B, determine Va and the time of the flight. x=5.1m
above a peninsula of land. the length of the box is 25 km, its width is 80 km, and a radiation inversion restricts mixing to 25 m. Wind is blowing clean air into the long dimention of the box at 0.8 m/s.
1.a college student borrows 1500 during his senior year. the loan is to be repaid in 20 equal quarterly installments.
A pressure gage connected between the upstream pipe and throat section shows a pressure difference of 29 kPa. The gasoline velocity in the throat section is 14 m/s. What is the velocity (m/s) in the upstream pipe
Calculate the peak bending moment for the 4x10 roof beam. Then draw a clear dimensioned FBD for the two exterior bearing walls above the floor joists, no moment calcs here.
The bottom of a rectangular flume is 5 m above reference level. The depth of the water in the flume is 3 m. The average velocity is 1.7 m/s. What is the total hydraulic energy at the surface of the water and at the bottom of the flume.
The pipe contains two 6 in steel elbows, two fully open gate valves, a fully open 90o angle valve, and a swing check valve. If the discharge end of the pipe is located 20 ft higher than the entrance, what is the pressure difference between the two..
1.a rectangular concrete channel is 3 m wide and 2 m high. the water 20 deg celsius in the main channel is 1.5 m deep
A hospital waste containing 0.7µCi/L of 32P is to be disposed of. How long must the radioisotope be held to meet the allowable discharge activity
Find an equation that expresses the relationship between the wages earned (x) and the Social Security taxes paid (y) by an employee who earns less than the maximum taxable wage base.
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