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A cubic crystal contains a screw dislocation. The Burgers vector of the dislocation is parallel to [001]. A crack propagates rapidly in the crystal along the (001) plane in the [110] direction. Sketch the geometry and orientation of the steps formed on the fracture surface.
the wind reaches a speed of 27.8 m/s in a storm. calculate the force acting on a 1m x 2m window facing the storm. the window is in a high-rise building. the air density p= 1.2 kg/m3.
Calculate the required average strength fc for the concrete ( a) if there are no prior test results for concrete with a compressive strength within 1000 psi of fc made with sim-ilar materials.
Determine the minimum size of the pad footing 2 metres wide for a steel column if a factor of safety of 2.0 is recommended (include an estimate of self weight of the footing in your calculations). The total load of the column is 447.644kN
Prepare a sample sealant joint, using a backer rod and silicone sealant obtained from a hardware store or building materials supplier. Apply the sealant to two parallel pieces of quarry tile or glass that are taped together with a spacer between t..
Give one possible characteristic or property of sanstone and of the quartzite that made you decide not to select it for your concrete project?
Determine the minimum distance from the diversion that a road sign should be located informing drivers of the temporary change on the highway. The letter height on the road sign is 5 inches.
This causes the student to begin to rotate. Find the student's final angular velocity. The moments of inertia of the wheel and of the student are 0.313 kg · m2 and 2.09 kg · m2 respectively.
A student in the laboratory plans to exert a vacuum in the head space above a surface of water in a closed tank. She plans for the the absolute pressure in the tank to be 10,400 Pa. The temperature in the lab is 20°C.
An industrial intermediate, 2, 4-dimethylphenol, has been spread on a surface soil as a 500-mg/L solution. the weekly volume placed on the soil was 25% of the pore volume for the top 0.5m of soil.
For this problem, read and understand the specifications to determine the system behavior. The specifications are intentionally somewhat ambiguous. If you find some rules on system behavior unavailable, state your assumptions and proceed forth wit..
A belt is wrapped around a pulley for 180 degrees. The loose-side belt tension is 100 lb and the coefficient of static friction is 0.30. Calculate the maximum belt tension if motion is impending. Assume A) a flat belt and B) a V-belt with a groobe an..
cyclic compression loading normal to the plane of the notch
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