C) 250um b) LA = 450 W, r H = 1000 um; w = 5 mm/s L'A" 450 W, rii- 1000 um; v = 5 mm/s; I 4 (r-o)= 10^-5'10 W/cm f # # *00 HW 0.05 300 Wickers - Hardness.
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