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Air at 20oC and 1atm flows at 20 m/s past the flat plate shown below. 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)
Determine the mass of the earth knowing that the mean radius of the moons orbit about the earth is 238.910mi and that the moon requires 27.32 days to complete one full revolution about the earth
Gas is flowing in a long 9-in-diameter pipe from A to B. At sectionA the flow is 0.65 lb/sec while at the same instant at section Bthe flow is 0.72 lb/sec. The distance between A and B is 750 ft.
Refrigerant 22 is used in the evaporator pipe of a commercial refrigeration unit. At steady state it flows at a rate of 0.5 kg/s through the pipe of constant diameter. It enters the pipe at -10C with a velocity of 5 m/s and a quality of 25%.
Show that the ultimate load for a strip footing under long-term conditions using the two triangle failure surfaces
Determine the Modulus of Elasticity of Concrete by the ACI formula for a concrete cylinder that has a unit weight of 120pcf (1920kg/m^3) and a compressive strength of 3000 psi (21MPa).
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. The radius of influence is 1200..
A municipal water plant has four filters that are each 20 ft long by 15 ft wide by 5 ft deep. The demand for water requires that they only operate, on average, three filters per day at a loading of 3 gallons per min / ft^2.
Given that the max shear strength of the the concrete shore is 10 kPa and the engineer requires a F.S. of 2.5, find the required are of concrete for the thrust block.
An engineering student has been given the assignment of designing a hydraulic holding system for a hay baling system. The system has four cylinders with 120 mm diameter pistons with a stroke of 0.320 m
Three cylinders from the same mix were tested for strenght. Cylinders A and B were cast in 4x8 molds while cylinder C was cast in a 6x12 mold. The total loads were as follows; cylinder A= 65,200 lbs., cylinder B= 68,550 lbs., cylinder C= 151,190 l..
Find the change in volume of 16.15 lb of water at ordinary atmospheric pressure for three conditions: Calculate each condition and note the trend.
A cylindrical sample of soil 39 mm in diameter and 77 mm long weighed 180 g. The sample is not fully saturated and its moisture content was found to be 27.0%. Assume rS = 2.70 Mg/m3. Determine: a. the bulk density, r b. the dry density, rd c. the d..
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