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1.A standard reverse-flow cyclone with a length of 5cm has a cut diameter of 250 microns. at a flow rate of 10^-7 m^3/s, what would the diameter corresponding to 90%removal be?
2.Water, initially dry saturated vapour at 4 bar, lls a closed rigid con- tainer. The water is heated until its temperature is 400C. Determine the work done and the heat transfer.
3.What is the elongation of a rectangular bar (cross section 2 inch * 2 inch length 4 ft) When it is subjected to an axial load of 80,000 lbs. Assume the material of the bar has the following properties G = 7,700 KSI, V =0.30
Two hemispheric shells are perfectly sealed together, and the internal pressure is reduced to 43 % of atmospheric pressure. The inner radius is 10.5 cm, and the outer radius is 10.75 cm. The seal is located halfway between the inner and outer radi..
A 12%,$ 50,000 bond is offered for sale at $45,000. If bond interest is payable monthly and the bond matures in 20 years, what nominal and effective rates of return per year will the purchaser make on the investment
Carbon dioxide flows in a 75 mm diameter PVC pipe at 0.014 kg/s at a pressure of 345 kN/m^2/s abs and a temperature of 10 degrees C. Calculate the head loss in 500 m of pipe.
Given a horizontal curve of radius 1400 feet, a central angle= 46 degrees 21 minutes located at PI 50 plus or minus 00.00 on the centerline of a two-lane road with 12-foot wide lanes,
A constant-head permeability test was conducted on a sample of fine silica sand. The cross-sectional area of the sample was 60 cm2 and its length was 150 mm.
Determine the length of roadway that is in full superelevation for a four-lane expressway with a 60 mph design speed. The BC of the curve is at station 15+00 and has a minimum allowable radius. The curve delta is 25 degrees and 30’.
choose one 1 native american tribe residing within the continental united states lower 48 states at the time of first
Cylinders A & B weigh 500N each and cylinder C weighs 1000N. Assuming frictionless contact between all surfaces, find all contact forces. Diameters A&B= 1, C=2. Frictionless contact means forces are normal to the contacting surfaces.
The pressuregradient is 60 kPa/m, and is negative. Compute the velocityat various points across the channel and show the results on aplot. Assume laminar flow.
A newly designed car has a 9.0 ft wheelbase, is rear wheel drive, and has a center of gravity 18 inches above the road and 4.3 ft behind the front axle. the car weighs 2450 lb, the mechanical efficiency of the drivetrain is 90% and the wheel radius i..
Design a horizontal curve with a 40-degree central angle (delta=40) for a two-lane road with 11-ft lanes. The design speed is 70 mi/h and superelevation is limited to 0.06ft/ft. Give radius, degree of curvature, and length of curve
A trapezoidal channel is to design to carry a discharge of 75 m3/s at maximum hydraulic efficiency. The side slope of the channel is 2 H/1 V at the left and slope of right side is 3H/1V. The Manning n value is 0.030.
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