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The truss is to be constructed of members with equal cross-sectional areas and using a material with yield stress 700 MPa. The structure must be designed to support a mass (m) of 3400 kg with a factor of safety of 3. Determine the required area of the members. (Calculate one area that satisfies these requirements, not a different area for each member.)
what policies were implemented during and after WW1,WW2,Cold war?
The vertical velocity of the box at the time that it hits the surface is v= 5m/s. After impact the camera experiences an acceleration of a = -kx, where k is a constant and x is the compression of the packing material.
What is the SI value of absolute pressure corresponding to a vacuum pressure of -10 inches of water. Assume the location is Moscow, Idaho. What is the SI value of gage pressure corresponding to a pressure 14 psia. Assume the location is Denver, Colo..
The telescope of the instrument is 5.25 ft above the ground station, whose elevation is 415.65 ft. What is the elevation of the tip of the spire? (Ignore atmospheric refraction and earth curvature)
A stainless steel tube with an outside diameter of 65 mm and a wall thickness of 5 mm is used as a compression member. If the axial normal stress in the member must be limited to 180 MPa, determine the maximum load P that the member can support.
What is the minimum distance from the stalled car at which the driver could apply the brakes and still stop before hitting it? Assume coefficient of rolling resistance of 0.013.
design a bar screen for a peak average flow of 0.46m3/s.you can consider reasonable assumptions.
If the elevation difference between the water surfaces is y = 25 + x/11 metres, what minimum pipeline diameter will be required to convey the design discharge? Once your design is complete, determine the actual discharge. The value of x equals 23.
If they plan to increase their savings by 5% each year, how much must they invest in the first year given that they expect to earn 4% per year on their investment?
Water is at 9000 kPa and 300 degrees celcius and flows through a partially open valve. Pressure immediately after the valve is measured to be 600 kPa. Calculate the specific internal energy of the water leaving the valve
The grains of wood in the board make an angle of 20 degrees with the horizontal as shown. Determine the normal and shear stresses that act perpendicular and parallel to the grains if the board is subjected to an axial load of 250 N.(Dimensions l=3..
A steel bar of length 30 inches and circular cross section whose diameter varies linearly from 0.50 inches at one end to 0.75 inches at the other is subjected to an axial tensile force of 4.5 kip. Find the change in length of the bar.
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