A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ? 10-8 · m, and the density is 7.41 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 .
(a) What length of wire is required?
m
(b) What must be the diameter of the wire?
mm