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A variable mesh screen produces a linear and axisymmetric velocity profile as indicated below in the air flow through a 2-ft diameter circular cross section duct. The static pressures upstream and downstream of the screen are 0.2 and 0.15 psi and are uniformly distributed over the flow cross section area.
Neglecting the force exerted by the duct wall on the flowing air, calculate the screen drag force.
The circular steel plate A is used to seal the opening on the water storage tank. Determine the magnitude of the resultant hydrostatic force that acts on it. Density of water = 1Mg/m^3
In a certain community 36% of the families own a dog, and 22 percent of the families that own a dog also own a cat. In addition 30 percent of the families own a cat. a.) what percentage of families own both a dog and a cat
A barge is 60ft long, 20ft wide, and 8ft deep. When empty, it weighs 210,000lb, and its center of gravity is 1.5ft above the bottom. Is it stable when floating in water?
a volumen of 20 cu ft of air at pressure of 50 psig is heated and expanded and to 30 cu ft and 40psig find the changes in the energy of air in jouls.
If I raise a 1000 lbf weight 100 feet above sea level on earth in 10 seconds how much power will be required
A fisherperson, pulling on the anchor cord, causes a force on the man of F=(40i+20j-50k)N. If the cord is 30m long,determine the Cartesian coordinates of the anchor at A. Assume that cord OA is a straight line.
what value for Fy are the two forces F1=4i+Fyj+20K(N) and F2=8i-5j+7k(N) perpendicular to each other
A rectangular tube has an outside dimensions that are 2in wide and 4in deep and a wall thickness of 0.25in. The tube is acted on by a bending moment of 12,000lb-in.
he City of Leeds (England) discharges about 1.4 m3/sec to the Aire River. Without the wastewater discharge, the river flow rate would be 12.7 m3/sec. Given that BOD(river) = 3.0 mg/L and BOD(wastewater) = 30.0 mg/L
A nozzle that discharges a 4in water jet into the atmosphere is onthe right end of a 10in diameter hose. the water in the pipehas a velocity of 12fps and a gage pressure of 60psi. Find the magnitude and direction of the resultant axial force reaction..
The rotor shafte of a helicopter drives the rotor blades that provide the lifting force and is subjected to a combination of torsion and axial loading. it is known that normal stress is 68 MPa and shear stress is -100 MPa.
How does the engineering classification of soils differ from he engineering classification of rocks
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