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The composition of moist air is given on a molar basis to be 78 percent N2, 20 percent O2, and 2 percent water vapor.
Determine the mass fractions of the constituents of air
A horizontal curve was designed for a four-lane highway for adequate SSD. Lane widths are 12 feet, and the superelevation is 0.06 and was set assuming maximum fx. If the necessary sight distance required 52 feet of lateral clearance from the roadw..
A reaction known to release 1.78 kJ of heat takes place in a calorimeter containing 0.100L of solution and the temperature rose by 3.65 degrees C. The calorimeter was then rinsed out and emptied. To the empty calorimeter was placed a small piece of c..
If the body temperature of an 80-kg man rises from 37°C to 39°C during strenuous exercise, determine the increase in the thermal energy of the body as a result of this rise in body temperature.
Three-ply asphalt felt and gravel roof over 2in of insulation board is supported by 18in deep precast reinforced concrete beams with 3ft wide flanges. If insulation weights 3lb/ft 2 and the asphalt roofing weights 5.5lb/ft2, determine the total dea..
Compare the required material strength and cycle efficiency of this rankine cycle with a carnot cycle operating with the same TH (30 degrees celsius) and TL is (-5 degrees celsius) by calculating the percent change in max pressure and thermal efficie..
At the same instant the frame h, not the horizontal blade, rotates about a vertical axis with a constant angular velocity w=0.9 rad/s, measured relative to h
A previously calibrated rotometer is being used to measure a gas flow. Calculate the true volumetric flow rate of methane in the rotometer whe. The rotometer reads 4.0.
For the purposes of assessing an economy's growth performance, which is the more important statistic, real GDP or nominal GDP? Why?
Determine the drag force FD on a golf ball assuming it is a smooth sphere. (Assume the air is at 60 F and standard pressure.) Now determine the drag force on an actual golf ball assuming CD = 0.25. How do the two forces compare
A rectangular gate is inclined at an angle of 30 degrees from the horizontal. It is 4 ft wide by 6 feet long. If it is hung from its upper end which is 8 feet below the waters top edge, what minimum applied force (bottom) is needed to open the gat..
A water tower containing 4000 m3 of water has been taken out of service to install a chlorine monitor. The concentration of chlorine in the water tower was 2.0 mg/L when the tower was taken out of service.
Your next project site is an old landfill, which reaches a depth of 30 feet. Below, there are many layers of both competent and caving soils, but none of the competent soil layers capable of giving the needed bearing capacity under the 12’’ diameter ..
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