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Consider a highway section where traffic is stationary, all trucks travel at speed s and cars at speed v. If aerial surveillance revealed that trucks were a fraction p of the vehicles on a photograph, what would be the fraction of trucks entering the section?
how many cubic feet of seawater, density 60 lb/ft^3, must be processed to recover 1 ton of magnesium, 1,272 ppm?
The point of intersection of the tangents is located at station (948+67.32). If the design speed of the highway is 60mi/h, determine both the point of tangent and the deflection angles to whole stations for laying out the curve. Select appropriate..
The driver strikes the sign at a speed of 25 mi/h. If the student was traveling at 55 mi/h when the sign was spotted, what was the drivers associated reaction time in seconds
How to calculate the principle of shoring system in formwork analysis when the secondly floor upper has been poured?
The total dissolved inorganic carbon (TIC) of a sample of groundwater is 8.33 mM. The temperature of the aquifer is 15C, the pH is 7.5, and the ionic strength is 0.05 M. What is the H2CO3, HCO3-, CO3 2-, and the partial pressure of CO2? [Use activ..
If the coefficient of kinetic friction between the 12.5 mm diameter axles and the wheels is mu_k = .3, determine the radius of the wheels. neglect rolling resistance of the wheels on the surface.
How much energy do methanogenic bacteria get from using glucose and hydrogen (H2) to form methane and water as the products. Determine the net reaction (assume methane and water are the only products).
A substance for which k is a constant undergoes an isothermal, mechanically reversible process from initial state(P1-->V1) to (P2-->V2), where V is a molar volume. a) Starting with the definition of k, show that the path of the process is described
determine the stations and elevations of the PVCs, PVIs and PVTs of the two vertical curves required to connect the highway segments, as well as the length of the constant grade section (connecting grade is to be small as possible).
Investigate the possibility of environmental problems that faced by the area of disaster.
A hot-rolled 7-mm-diameter steel rod is axially loaded at room Temp under a fully reversed cyclic loading. under the rotating beam test, the endurance limit for this steel is 470 MPA, under static loading the ultimate strenght is 1200 MPA.
A tubular aluminium bar (G=28GPa) of square cross section with outer dimensions 50mm x 50mm must resist a torque T=300Nm. Calculate the minimum required wall thickness t_min if allowbale shear stress is 20MPa
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