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1.A particular soil has a total (moist) unit weight of 122 pcf and a dry unit weight of 101 pcf. The specific gravity of soil is 2.70. Calculate the water content and degree of saturation.
2.A specimen of saturated soil has a water content of 145 percent and a total unit weight of 84 pcf. Find the void ratio and specific gravity of solids.
3.Given a force with components [120, 330, -150] lbs acting at the point [10, 14, 0] inches, find the moment that this force creates about the point with coordinates [4, -5, 2] inches.
4.A jet of water of diameter 75mm moving with a velocity of 25m/s strikes a fixed plates in such a way that the angle between the jet and plate is 60? find the force exerted by the jet on the plate. (a) In the direction normal to the plate and (b) In the direction of the jet
Compare the total reactor volume required for 90% removal of a substance that decays according to first-order kinetics with a rate constant of 0.05 day -1 in a CM system that contains a single reactor against a system that contains three CM reacto..
The saturated unit weight (sat) 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.
A pitot-static tube is used to measure the velocity at the center of the pipe. If the fluid velocity is 10 ft/s, what is the deflection on a mercury manometer connected to the pitot-static tube
A water sample contains 118mg/L of bicarbonate ion, 19mg/L of carbonate ion, and has a pH of 9.5. What is the alkalinity of this water expressed as mg/L of CaCO3
What are the velocities of both just before impact and just after impact. There is a distance of 5m between the vehicles prior to the winch being turned on.
An agronomist wants to measure the rainfall at the centroid of a plowed field between two roads. What are the coordinates of the point where the rain gauge should be placed?
Knowing that the tension is 120 lb in AB and 40 lb in AD, determine graphically the magnitude and direction of the resultant of the forces exerted by the stays at A
Argon is expanded in an isentropic turbine from 2 MPa and 500oC to 200 kPa. Determine the outlet temperature and the work produced by this turbine per unit mass of argon.
The sides of a closed figure have been measured and found to have a length of 4133.64 ft. If the total error in the measurements is equal to .15 ft, what is the precision of the work?
Design a horizontal curve with a 40-degree central angle (delta=40) for a two-lane road with 11-ft lanes. The design speed is 70 mi/h and superelevation is limited to 0.06ft/ft. Give radius, degree of curvature, and length of curve.
The van leaves as soon as 6 people have arrived. On average, 24 passengers arrive each hour. What is the probability that the period between bus department is more than 15 minutes.
a) What flow rate (m 3/s) does the filter handle during production? b) What volume of water is needed for backwashing plus rising the filter in each filter cycle?
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