Question: 4) The diffusion coefficients for silver in copper are given at two temperatures: (a) Determine the values of D0 and Qd. (3 points) (b) What

4) The diffusion coefficients for silver in copper are given at two temperatures: (a) Determine the values of D0 and Qd. (3 points) (b) What is the magnitude of D at 875C ? (3 points) 5) Consider a cylindrical titanium wire 3.0mm in diameter and 2.5104mm long. Calculate its elongation when a load of 500 N is applied. Assume that the deformation is totally elastic. E =107GPa. (5 points ) 6) A cylindrical rod of copper (E=110GPa) having a yield strength of 240MPa is to be subjected to a load of 6660N. If the length of the rod is 380mm(15.0in.), what must be the diameter to allow an elongation of 0.50mm(0.020in.)? (5 points)

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