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A truck is designed to measure concrete roughness. During a typical test the driver will bring the vehicle to a constant test velocity, v, and then suddenly lock the brakes bringing the vehicle to a complete stop. Knowing the total stopping distance, d, an evaluation of the pavement roughness can be made. During a test on I-25, the vehicle had a total mass of 20 Mg, initial velocity of 30 m/s, and stopping distance of 110m. Estimate the effective coefficient of friction between this runway and the trucks tires.
A discharge of 2,200 ft^3/sec flows in a trapezoidal channel at a normal depth of 8.0 ft. The channel has a slope of 0.01, a 12-ft bottom width, and side slopes of 1:1 (H:V). Determine the manning coefficient of channel roughness
A storage room in an industry has a floor area of 30 m by 50 m and a height of 10 m. A garage door has a width of 3 m and a height of 3 m and the room has four windows that are 0.9 m by 0.9 m, situated at the height of 1 m from the floor.
What is the reaction that occurs with hexanal and propanol (give both the hemiacetal and acetal products)?
A second load P2 is uniformly distributed around the cap plate at B. The diameters and thicknesses of the upper and lower parts of the post are dAB= 1.25 in, tAB= 0.5 in, dBC= 2.25 in and tBC= .375 in respectively.
A reservoir at elevation 700 ft will supply a second reservoir at elevation 460 ft. The reservoirs are connected by 1300 ft of 24-in cast-iron pipe and 2000 ft of 20-in cast iron pipe in series. What will be the discharge delivered from the upper ..
Vehicles arrive at a freeway on-ramp meter at a constant rate of six per minute starting at 6:00A.M. Service begins at 6:00A.M. such that u(t)=2+0.5t, where u(t) is in veh/min and t is in minutes after 6:00A.M.
water flows at a velocity of 25 ft/s at a depth in a rectangular channel 16 feet wide. Determine the downstream depth necessary to form a hydraulic jump, the head loss through the jump and the horsepower dissipated in the jump.
Beginning whith the 1-D, steady state, general mass(volume) balance equation Qin-Qout=0 derive the 1-D poisson equation.
If they are sliding on a smooth horizontal plane with the velocities shown, determine their speeds just after impact. The coefficient of restitution between them is e = 0.6. Disks A and B have a mass of 16kg and 11kg , respectively.
By assuming a linear speed-density relationship, the mean free flow speed on a highway facility lane equals 65 mph. The jam density is observed to be about 170 vpm. 1. Plot the q-k-u curves
What annual investment is required at 8% per year compounded annually to accumulate to $100,000 at the end of 20 years?
A 0.9 efficient Francis turbine produces 200 MW with a speed of 150 rpm. The blade height is 1.0 m, and the inlet radius of the rotor is 7.0 m. The flow exits the turbine in a radial direction.
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