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1. Which of the following statements are true for the line defect
A) Burger vector is parallel to dislocation in an edge dislocationB) Burger vector is perpendicular to dislocation in an edge dislocationC) Burger vector is perpendicular to dislocation in a screw dislocationD) Burger vector is parallel to dislocation in a screw dislocation
2. A polymer bar's dimensions are 1 in x 2 in x 15 in. The polymer has a modulus of elasticity of 600,000 psi. What force is required to stretch the bar elastically to 15.25 in.?
A) 10,000 lbB) 20,000 lbC) 30,000 lbD) 40,000 lb
3.A 3-in. diameter rod of copper is to be reduced to a 2-in. diameter rod by being pushed through an opening. The modulus of elasticity for the copper is 17 x 106 psi and the yield strength is 40,000 psi. To account for the elastic strain, the diameter of the opening would be
A) 2.521 inB) 3.0 inC) 0.895 inD) 1.995 in
ball a is released from rest at a height of 40ft at the same time that a second ball b is thrown upward 5ft from the
a rigid tank initially evacuated develops a small hole and air slowly leaks in from the surroundings at a mass flow
Complete the sketch of the obtuse triangle. It must have an area of 1.75 in.2. Prove the geometry by dimensioning the sketch and showing the area calculation. Show only those dimensions needed for the area calculation. Note: each grid unit = .25 i..
one leg of a mercury u-tube manometer is connected to a pipe containing water under a gage pressure of 15 lbfin2. the
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Calculating the heat transfer rate and the rate that entropy is produced in a gear box. A gearbox operating under steady state conditions recieves 24 hp along the input shaft and delivers 10hp along the output shaft
when using labview applying a voltage to the dc motor and examining its angular rate can be done using the modeling
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