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a ball is thrown with a valocity of 30 m/s at an angle of 40 degrees above the horizontal from the top of a 100m tall building.
a) what is the greatest vertical height ball achieves?
b) what is balls velocity when it lands. (neglect air resistance in both cases) DO NOT USE 2D projectile motions, only work or energy considerations.
The velocity distribution for water (20 C) near a wall is given by u=a(y/b)^1/6 where a=10m/s, b=2mm, and y is the distance from the wall in mm. Determine the shear stress in the water at y=1mm. [viscosity of water at 20 C = 1.81 x 10^-5]
The particle has a mass of 0.6 and is confined to move along the smooth horizontal slot due to the rotation of the arm .Determine the force of the rod on the particle and the normal force of the slot on the particle when = 35.
determine the adequacy of W16x40(A-36) of steel beam that supports a uniform load of 800 pounds per foot over a span of 30 feet
A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. Estimate (a) the mean, (b) the standard deviation of the population of all television tubes produced by this company.
water from a reservoir is being supplied to a powerhouse that is located at an elevation 935 ft below that of the reservoir surface. Discharging through a nozzle, the water has a jet velocity of 240 fps and a jet diameter of 6 in.
convert the azimuths from north to bearings, and compute the angles, smaller than 180 degrees between successive azimuths 68o06'42", 133o15'56", 217o44'05", 320o35'18"
Calculate the pressure inside a 2-mm diameter bubble of water at 20°C and compare with the pressure inside a 2-mm diameter droplet of water at 20°C.
If the ball strikes the side of the building 2s after being thrown, at what height above the base of the building did the ball strike the building? What is the velocity of striking?
A section of a road has a superelevation of .6% and a curve of 600ft radius. What speed limit will you recommend at this section of the highway
How do you calculate the force of water hitting a concrete cylindrical pole. The velocity of the water is 2 ft/s, the depth of the water is 10 ft, and diameter of the pole is 3 ft. So what would be the total force exerted on the pole by the water?
If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
An open top tank contains a layer of SAE 30 oil 0.5 m thick, a layer of water 0.7 m thick, and a layer of mercury 0.3 m thick. Calculate the pressure, and the piezometric head at the free surface, at both interfaces, and at the tank bottom.
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