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1.A 3000 lb car has a maximum speed of 140 mi/h with 16-in radius wheels, a gear reduction of 3.5 to 1, and a drivetrain efficiency of 92%. it is known that at the cars top speed the engine is producing 220 ft-lb of torque. if the cars frontal area is 25 ft^2, what is its drag coefficient?
2.Each month the speedy dry Cleaning company buys 1 barrel (0.160 m^3)of dry cleaning fluid . Ninety percent of the fluid is lost to the atmosphere and 10 percent remains as residue to be disposed of.The density of the dry cleaning fluid is 1.5940 g/ml .Draw a mass balance diagram and estimate the monthly mass emission rate to the atmosphere in kg/mo.
Draw the shear diagram for the shaft. The bearings at and exert only vertical reactions on the shaft
A spherical pressure vessel has an inner diameter of 2 meters and athickness of 10 mm. A strain gauge having a length of 20 mm is attached to it, and it isobserved to increase in length by 0.012mm when the vessel is pressurized.
What return period must an engineer use in the design of a bridge opening for a 50% risk that flooding will occur at least once in two consecutive years? Repeat for a risk of 100%.
Explain how the presence of the collimation error, e, can be detected in a "Two Peg Test" operation.
A rectangular concrete beam has f'c=3000 psi and steel with fy=40ksi. Select the beam dimensions and reinforcement for a balanced section if the beam sustains a moment as a result of dead load of 60 kip-ft and a moment as a result of live load of 90 ..
The company expects to spend $100,000 per year for labor and $125,000 per year for supplies before a product can be marketed. At an interest rate of 15% per year, what is the total equivalent future amount of the company's expenses at the end of 3..
A fine-bubble aeration basin has a flow of 21.5 mgd, an influent BOD of 180 mg/l, 31 mg/l of mmonia, and effluent of 10 mg/l. During the winter, the wastewater temperature of 14.8 degrees C does not nitrify.
A pipe line of 1.25 m diameter has a circular gate at its end. This gate can be operated around its horizontal diameter. If the pipe is flowing full with velocity almost equal to zero, calculate the turning moment required to operate the gate
A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. Estimate (a) the mean, (b) the standard deviation of the population of all television tubes produced by this company.
If the rate of travel of the ram u is 0.5 fps, find the frictional resistance, F when 6 ft of the ram is engaged in the cylinder.
Determine the major and minor principal stresses at failure and the effective stress friction angle (assume c' = 0). Plot the Mohr diagram.
A well installed into a confined aquifer with a porosity of 0.3 and saturated thickness of 80 ft. The gravel pack requires a well screen slot width of 0.025 inches. The hydraulic conductivity of the aquifer is 60 ft/d.
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