If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol (note that 1 kmol = 1,000 mol), and copper has one free electron per copper atom, determine the following.
(a) the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 21.7 A current..
m/s

(b) the Hall voltage if a 2.48 T field is applied perpendicular to the wire

V