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On the two lane carriageways, roadworks restrict the width of both traffic lanes, generating a bottleneck to the traffic flow. The maximum flow per lane on the unobstructed carriageway is 2100 vehicles per hour whilst on the section under repairing the maximum flow per lane reduces to 1200 vehicles per hour. When stationary, vehicles are spaced at average distance headway of 6 m. It may be assumed that there is a linear relationship between speed and density. When the traffic flow approaching the roadworks is 3500 vehicles per hour, calculate:
1the speed of the traffic system a considerable distance in advance of the bottleneck;
2the speed of the traffic stream immediately before the commencement of the bottleneck; and
3the speed of the shockwave foamed by the bottleneck.
A steel tank hold 120 ft^3 of water at atmospheric pressure(14.7psi and 68.4 degrees f). the water is subjected to a 100 fold increase in pressure. determine the initial weight and final density of the water if the volume decreases by .545 ft ^3.
Are either of the Ax or Jx forces relevant to finding the tension between H and J. If so, what is the easiest way to solve for those 2 unknowns.
laminar flow of a real fluid down a cylindrical pipe of constant radius R. Poiseuille showed that the velocity profile was parabolic and given by u(r)=c(R^2-r^2), where r is the radial coordinate and c is a dimensional constant.
The moto draws in the cable at D with a constant acceleration of aD=8 m/s^2. If vD=0 when t=0, determine: a) the time needed for block A to rise 3 m b)the relative velocity of block A with respect to block B when this occurs.
If the amount of heat transfer in the HE unit is 2460 kJ per kg of steam, what is the magnitude of shaft work obtained from the turbine in kW?
After drying in the oven, it weighs 4.44 kg. The relative density of the grains is 2.70. Determine the degree of saturation, void ratio, porosity and moisture content of the soil in its natural state.
the outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. if the yield stress for the steel is (sy)st = 640 MPa, and for the bronze (sy)br = 520 MPa determine the magnitude of the largest elastic load P
Oil (specific gravity 0.752) flows through a 6" horizontal pipe under a pressure of 60 psi. Assuming no losses, what is the flow in cfs if the pressure at a 3" diameter reduction is 20 psi
Bridge scour, Determine the magnitude of the contraction scour depth given the following information about the channel and bridge
Design a cyclone that has a collection efficiency between 80% and 85% (use parcticle size distribution given below). you must assume a dpc of 4.2 microns,an inlet gas velocity of 25 m/s and a K of 15.
A sedimentation basin is used to remove suspended solids from a wastewater. The rate of flow of wastewater into the tank is 10 L/s, and the influent concentration of suspended solids is 200 mg/L.
Determine the magnitude of which will cause the reaction at the bearing to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Set = 600 .
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