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3. 5 the dependence of the dendrite arm spacing l on...

# Question: 5 the dependence of the dendrite arm spacing l on...

###### Question details

5. The dependence of the dendrite arm spacing, l, on the cooling rate, r, is
given by l = kr-n. l was found to be 100 μm at r = 0.1 K/s and 10 μm at r = 60 K/s. a.   Find k and n. b.   What rate of cooling would be required to produce a spacing of
l = 1.0mm?