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A speedboat on hydrofoils is moving at 20 m/s in a freshwater lake. Each hydrofoil is 3 m below the surface. Assuming, as an apporximation, frictionless, incompressible flow, find the stagnation pressure(gage) at the front of each hydrofoil. At one point on a hydrofoilm the is -75kPa(gage). Calculate the speed of the water relative to the hydrofoil at this point and the absolute water speed.
using darcy's law compute the quantity of flow, seepage velocity and contaminant loading of the river. ground water is flowing through unconfined uniform 3m thick sand aquifer and discharging to river.
Deflection of a Beam, If a beam of lenght L is fixed at the ends and loaded in the centre of the beam by a point load of F newtons the deflection
find an expression for the diameter, D, of the droplet, in terms of the specific weight and surface tension, assuming the contact angle just before seperating is zero.
A horizontal water jet impinges against a vertical flat plate at 25 ft/s and splashes off the sides in the vertical plane. If a horizontal force of 350 lbf is required to hold the plate against the water stream,
given f(x) = -2x^6 - 1.5x^4 + 10x +2. use a root location technique to determine the maximum of this function. perform iterations until the approximate relative error falls below 5%.
Suppose 500 people are approched outside of a grocery store to answer some survey questions. If each person decides independently whether or not to participate, and each has a probability of 0.1 of participating
Select the number and size of reinforcing bars required to resist a total factored moment of 180 ft. kips for a rectangular section with b = 12 in., d = 19.5 in., h = 24 in., fc = 4 ksi, and fy = 60 ksi. Check for minimum reinforcement requirement..
Suppose that the distance from the lake outlet to the withdrawal cannot be more than 20 mi. What should be the new volume of the lake?
A student counted 92,90,92,91,93, and 91 paces in six trials of walking along a course of 200 ft known length on level ground. Then 85,86,86 and 84 paces were counted in walking four repititions of an unknown distance AB.
Water flows steadily through a horizontal nozzle. The nozzle inlet diameter is 6 in. At the nozzle outlet, where the pressure is atmospheric, the diameter is 2 in. Determine the pressure head at the nozzle inlet to produce a water jet velocity of ..
determine the angular acceleration of the spool and the acceleration of the trailer. The wheels have negligible mass and are free to rotate.
A newspaper reports that in the last 5 years, prices have increased a total of 50%. this is equivalent to what annual inflation rate, and is it compounded annually
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