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A toll booth on a turnpike is open from 8:00AM to 12 Midnight. Vehicles start arriving at 7:45AM at a uniform deterministic rate of six per minute until 8:15AM and from then on at two per minute. If vehicles are processed at a uniform deterministic rate of six per minute, determine when the queue will dissipate, the total delay, the maximum queue length (in vehicles), the longest vehicle delay under FIFO, and the longest vehicle delay under LIFO.
For lifesaver please show equations or diagrams used.
To protect the channel from erosion, the normal flow velocity for the design discharge has to be reduced to 7.0 fps or below, and the flow Froude number must be reduced to 0.80 or below.
A 1200 ft. equal tangent crest vertical curve is currently designed for 50 mi/hr. A civil engineering student contends that 60 mph is safe in a van because of the higher driver’s eye height. If all other design inputs are standard, what must the driv..
A 5 km2 lake does not have a defined input but receives runoff from its watershed (25 km2). The area receives 60 cm/yr in precipitation. Evaporation from the lake surface is 10 cm/yr with watershed evapotranspiration of 20 cm/yr.
Two large water reservoirs are connected by 8,000 ft of schedule 40 steel pipe. The level of one reservoir is 500 ft above the level of the other
Design a column base plate for a W10 x 33 column supporting a service dead load of 20 kips and a service live load of 50 kips. The column is supported by a 12-inch x 12-inch concrete pier. Use A36 steel and f 'c = 3 ksi. Answer 12 x 12 x 5/8
Calculate the depth h of mud for which the 3m concrete retaining wall is on the verge of tipping about its forward edge A. the density of mud may be taken to be 1760 kg/m3 and that of concrete to be 2400 kg/m3.
An overpass is being built over the PVI of an existing equal tangent sag curve. The sag curve has a 70 mi/h design speed, and G1 = -6%, G2 = +3%.
Find the probability that in a sample of 100 bulbs, (a) 0 bulbs will be defective (b) 1 bulbs will be defective (c) 2 bulbs will be defective (d) 3 bulbs will be defective (e) 4 bulbs will be defective (f) 5 bulbs will be defective
Water is flowing in a 6-cm diameter pipe at 20 m/s at 10?C. If the pipe enlarges to a diameter of 12-cm, calculate the reduced velocity. Also, calculate the mass flux rate and the flow rate.
A force is specified by the vector F = [(10)i + (150)j + (-50)k] N. Calculate the angles made by F with the positive x-, y-, and z-axes
On the basis of melting temperature, oxidation resistance, yield strength, and degree of brittleness, discuss whether it would be advisable to hot work or to cold work (a) aluminum alloys, and (b) magnesium alloys
Lake silbersee is located in the German city of Nuernberg. The lak's water quality has been diminishedbecause of high hydrogen sulfide concentrations that originate froma nearby leaking landfill.
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