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1 Homework for Chapter 3. Total 100 points. Due on Thursday, 2/15 at the beginning of the lecture. 1.Why is there no base-centered cubic lattice in Table 3.2? (Use a sketch to answer). (5 points) The base-centered cubic is equivalent to a simple tetragonal Two adjacent base-centered unit cubic cells A simple tetragonal unit cell 2.Calculate the APF of 0.68 for the bcc metal structure. (5 points) For bbc metal, , where a is the lattice parameter and r is the radius of the metal. 3.Calculate the APF of 0.74 for fcc metals. (5 points) For fcc metal, , where a is the lattice parameter and r is the radius of the metal.
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