Giancoli Ch. 18 – p. 516, Problems #12-16, 20-22 key

12) 4.7 x 10-4 m
13) 3.3 x 10-2 Ω
14) 1.2
15) 4.6 mm = 4.6 x 10-3 m
16) make the cut at 20% of the length of the wire; Rshort = 2.0 Ω; Rlong = 8.0 Ω
20) 2.5 V
21a) Rx = 3.8 x 10-4 Ω
21b) Ry = 1.5 x 10-3 Ω
21c) Rz = 6.0 x 10-3 Ω
22)