chapter 29 pt 1

29.3

A proton moves along the x-axis with vx=2x10^7 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the (x,y,z) positions (a) (2 cm, 0 cm, 0cm), (b) (0 cm, 2 cm, 0 cm), and (c) (0 cm, -1 cm, 0cm)?

29.11

The magnetic field at the center of a loop, 2 cm in diameter, is 2 mT.

a. What is the current in the loop? b. A long straight wire carries the same current you found in

part a. At what distance from the wire is the magnetic field

2 mT?

29.21

y (cm) y (cm) 50 Integration path x (cm) x (cm) FIGURE EX29.20 FIGURE EX29.21 21. || What is the line integral of f?) between points i and f in FIGURE EX29.21