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Air at 20oC and 1atm flows at 20 m/s past the flat plate . A pitot tube placed 2mm from the wall, develops a manometer head h=16mm of Meriam red oil (SG = 0.827), measured relative to atmospheric pressure. Determine x, the downstream position of the pitot tube relative to the leading edge of the flat plate. (hint: assume laminar and determine the velocity at the manometer inlet)
A laser range finder consists of a laser and a light receiver. It operates by bouncing a laser pulse off a mirror and measuring the time of flight, the time it takes for the pulse to leave the laser, bounce off the mirror and return to the receive..
Determine the water level rise in an unconfined aquifer produced by a seasonal precipitation of four inches. The aquifers porosity is 20 percent and its specific retention is 9 percent.
two wooden members of uniform rectangular cross section of sides a = 100 mm and b = 60 mm are joined by a simple glued joint as shown. knowing that the ultimate stress of the joint are 1.26 MPa in tension and 1.50 MPA in shear and that P= 6kN
The new owners propose to flush the pond into their discharge pipe leading to the Atlantic Ocean, which has a salt concentration above 30,000 mg/L. What flow rate of fresh water (in m3/s) must they use to reduce the salt concentration
Using method of joints, calculate the forces in members EC and EF. Note that the length of the member CD is 3.464 m, the length of member EC is 2m, and angle CDE is 30 degree ( this will cut down a bit of trigonometry effort).
North City must choose between two new snow-removal machines. The SuperBlower has a $70,000 first cost, a 20 year life, and an $8000 salvage value. At the end of 9 years , it will need a major overhaul costing $19,000.
A 10cm diameter vertical tank holds 20cm of water topped with 15cm of ethyl alcohol. The cylinder is rotated about its central axis at a rotation rate of 20 rad/s. (a) What will be the shape of the air-alcohol and alcohol-water interfaces
What are the effects of water pollution on the components of the hydrologic cycle?
Knowing that P=109.2 kips and Q=72.8 kips, determine (a) the components of the reaction at C, (b) the components of the force exerted at B on segment AB.
Define what each term in the equation means. Overall, what quantity is being conserved? Under what conditions might you be justified in assuming that non-linear terms are not important
A pressurized steel tank has a radius r=0.6m, a wall thickness t=18mm and an internal pressure p of 2.8 MPa.The steel has a modulus of elasticity E of 200 GP and a poissons ratio 0.30.
What is the vapor pressure of carbon dioxide in the bottle before it is opened (i.e., when it is at equilibrium) assuming no other ions are present besides those related to CO2 and water
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