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A vertical wall 6.0 m high supports a cohesionless backfill with a horizontal surface. The backfill soil's unit weight and angle of internal friction are 17.2 kN/cubic meter and 31 degrees respectively and the angle of wall friction friction between backfill and wall is 20 degrees. Find the total active earth pressure against the wall.
The posItIon of a particle along a straight line is given by s = (t 3 - 9t 2 + 1St) ft, where t is in seconds. Determine its maximum acceleration and maximum velocity during the time interval 0 :5: t :5: 10 s.
A 12%, $50,000 bond is offered for sale at $45,000. If the bond interest is payable monthly and the bond matures in 20 years, what nominal effective rates of return per year will the purchaser make on the investment
Calculate Earth's gravitational force on the Shuttle astronauts while orbiting at an altitude of 220 miles (or 354 km) above Earth's surface.
An obstruction is lodged in a 10-ft wide rectangular channel (n = 0.022) that has a botom slope of 0.005. The depth of the channel just upstream of the obstruction is 5.0 ft. If the flow rate is 325 cfs, what is the channel and flow classification
Determine the maximum service load W (kips) at the mid-height of the beam-column shown in the accompanying figure 2.1. Assume the member is hinged with respect to bending in both x and y directions at the top and bottom.
Box 1 weighs 284.49N Box 2 weighs 421.83N. The angle between box 2 and the ramp is 37deg. Find the minimum angle for alpha that allows the boxes to remain stationary.
A lunar module weights 1500 kg on earth where g = 9.75 mps2. On the surface of the moon where g = 1.70 mps2, what will be the force in Newtons required to accelerate the module at 10 mps2?
a 2000 m long commercial steel pipe of 200 m diameter converys water at 20 C between two reserviors. the difference in water level between the reserviors is maintained at 50 m.
a piston/cylinder contains liquid water at 2 degrees Celcius, with a freely moving piston maintains a pressure of 200 kPa on the water. Heat transfers to the liquid water until the piston/cylinder contains only saturated vapor.
The angle of the release is 30 degrees. Determine the horizontal distance the shot travels from the point of release to the point where it hits the ground.
If the fracture were planar in shape, having an average opening of 2 mm, what would the new value of Hc be?
Calculate the area of flow, hydraulic radius, wet perimeter, and top width of a 12-inch diameter pipe that flows at 1/4 of its capacity.
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