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A drunk driver in a 2200kg car plows into a 2100kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 28m before stopping.
If the effective coefficient of friction is 0.72, how fast was the drunk going just before the collision?
Two piezometers are located 1000 ft apart with the bottom located at depths of 50 ft and 350 ft, respectively, in a 400-ft-thick unconfined aquifer. The depth to the water table is 50 ft in the deeper piezometer and 40 ft in the shallow one.
The pipe is connected to a 400mm diameter pipe by a concentric reducer, the gauge pressure at the entrance of the reducer is 3.00 bar and the the energy losses are neglected . Determine the restraining force.
Show or formulate the shear and bending moment expressions for each board, and plot/draw the shear and bending moment diagrams of the boards.
A tape is calibrated and found to measure 100.04ft between the 0- and 100-ft marks. What measurements should be laid out to establish a horizontal distance of 682.25ft?
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
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?
A four- lane undivided multilane highway ( two lanes in each direction) has 11- ft lanes and 5- ft shoulders. At one point along the highway there is a 4% upgrade that is 0.62 mi long.
A dense sand has an effective friction angle of 43 and c'=0. A dry, 2.8-inch diameter sample is tested in drained triaxial shear with a confining pressure of 2500 psf. What axial load, P (in pounds), will be required to fail the sample?
The 75 lb block is released from rest 5 ft above the plate. Determine the compression of each spring when the block momentarily comes to rest after striking the plate.
Draw the FBD and the shear and bending moment diagrams. Label all minimums, maximums and zero crossing points as well as the slopes as constant, linear or parabolic.
AGNO3 is added to a solution containing 0.001 mol Cl- amd 0.001 mol Br- per liter. What are the concentrations of Cl- and Br- remaining when AgCl just begins to precipitate?
There are 10 vehicles in a queue when an attendant opens a toll booth. Vehicles arrive at the booth at a rate of 4 per minute. The attendant opens the booth and improves the service rate over time following the function u(t) = 1.1 + .30t, where u(..
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