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1) The freeway off-ramp is circular with 60 m radius. The off-ramp has a slope β'. The static friction coefficient between the tires of a car and the road is 0.4.
(a) Draw two FBDs and specify all forces when β = 0o.(b) Find max speed (m/s) at which it can enter the ramp without losing the traction when = 0o .(c) Find a min. μs that a car's max speedl [m/s] can reach 20m/s when β = 0o without losing the traction.
How to detect eror in line of collimation and what does line of collimation means.
A constant head permability test is performed on a soil that is 2 cm X 2 cm square and 2.5 cm long. The head difference applied during the test is 18 cm, and 5 cm^3 is collected over a time of 100 sec.
a well is contaminant with 340 mg/L of tetrachloride ( perchloroethylene). the water must be remediated to achieve a concentration of 0.2 mg/L ( the detention limit ).
You add 100 mg/L of glucose to pure water, then decide that this was a mistake and decide to remove it biochemically before you serve the water to your friends at a cocktail party. To remove the glucose, you seed the water with a harmless bacteria..
Chemical ‘A' is regulated by EPA and the maximum allowable concentration in water is 5 ?g/L. Design a reactor for a water treatment plant where 1000 ppm of chemical ‘A' is introduced at a flow rate of 100 m3/min.
Find the settling velocity of a 20 µm diameter particle with density 1500 kg/m3. If this particle had been hurled to a height of 8,000 m during a volcanic eruption, estimate the time required to reach the ground
You are given that a piece of rope is 90.5 ft long. The distance between the poles holding the rope is 90 ft. We are to find the tensions in both sides of the rope for someone walking across the rope and the deflection
Calculate the total stresses, pore water pressures and effective stresses at points a and b. Clay saturated unit weight=20KNm^3, Sand saturated unith weight = 21KNm^3
Three reservoirs - connected by a branching cast-iron pipe system. If the pipe lengths ar L1 = 3000ft, L2 = 2200, and L3 = 1600 ft the respective pipe diameters are 15,10, and 18in, and the surface water elevations of two of the three reservoirs are ..
A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, the directional peak-hour volume is 3800 vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak-hour factor is 0...
A concrete column with cross-sectional area is A= 120inches squared supports an axial compressive load P=9.0 kip, including the weight of the column. Determine the bearing stress in the soil. Concrete weighs 150lb/ft cubed
A chemical mixing basin is to be designed to blend chlorine and treated wastewater. The basin flow is 700 gallons per minute and the basin dimensions are 5 feet by 5 feet by 5 feet water depth.
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