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The 90-lb force is required to drag the 200-lb crate 60 ft up the rough inclined plane at constant velocity. If the force is removed when the crate reaches point B, and the crate is then released from rest, determine the crates's velocity when it slides back down the plane and reaches point A.
A level is set up midway between two wood stakes that are about 300 feet apart. The rod reading on Stake A is 9.65 ft and the reading on stake B is 4.23 ft. The level is then set up 6 feet in front of stake B.
A sample of dry sand with a specific gravity total of 16.49 kN/m3 and a relative density of 2.67 grains, is placed outdoors. During a rainy period, the sample volume remains constant but the degree of saturation increases to 40%.
Below a discharge from a wasterwater treament plant , an 8.6km stream has a reoxygenation constant of .4 d^-1, a velocity of .15m/s, a dissolved oxygen concentration of 6mg/L, and an ultimate demand of 25mg/L.
determine the velocity and acceleration of point C of the belt, (a) immediately before the power is turned off. (b) 9 s later.
If the tank is 2 meters deep and the particle enters the tank at the surface of the water, what is the longest amount of time that the particle can take to settle, if it is to be removed
Determine: a. the Level of Service for this segment; b. the loss in Level of Service, if due to construction the lane width is reduced to 10 feet and there are concrete barriers one foot away from either end of the pavement.
Set up life cycle diagram for both alternatives and calculate net present value (NPT) and annual cost for the life time.
The distance AB is measured as 322.33 ft, the angle at A is measured as 32º15' and the angle B is determined to be 41º30'. Determine the stations of the PC and PT.
A homogeneous coarse sand deposit has a water table at 10 m depth. The water coefficient of permeability of the sand is found to vary significantly with height above the water table even though the sand deposit is homogeneous.
For the purposes of assessing an economy's growth performance, which is the more important statistic, real GDP or nominal GDP? Why?
Heat is transferred to the water such that the temperature in the tank remains constant. Determine the amount of heat that must be transferred by the time one half of the total mass has been withdrawn.
A rectangular beam of width 300 mm and depth 450 mm supports loads producing a shear force of 300 kN at a particular section. What shear stresses exist at the following points
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