Ch. 29 1

Chapter 29

Serway & Jewett

Ch. 29 2

B-field from magnet E-field from pt charge

Ch. 29 3

Electric dipole Magnetic dipole

Ch. 29 4

Attract Repel

Attract

Repel

Ch. 29 5

Ch. 29 6

Ch. 29 7

Magnetic Force on positive and negative charges

Ch. 29 8

cba

Right-hand rule for vector cross products

Ch. 29 9

Assume the pictured electron beam initially moves in the vertical direction and then bends to the right in the plane of the picture.

Which ways does B point?

Ch. 29 10

Ch. 29 11

Ch. 29 12

090104

Ch. 29 13Table 29-1, p.899

Ch. 29 14

Exotic astrophysical phenomena may be addressed with future multi-Petawatt lasers

PetaWatt LaserTe ~ 1 keVTrad ~ 1 keV

B ~ 100 Megagauss@ n ~ 10 g/cm3

Neutron StarTe ~ 10 keVTrad ~ 10 keV

B ~ 10 Gigagauss@ n ~ 10-1-10-3 g/cm3

The minimal requirements for photon-bubble instability could potentially be met with a properly configured 10 ps PetaWatt laser experiment.

HEDP Task Force

B ~ 106 T B ~ 104 T

Ch. 29 15

Active Figure 29.19

(SLIDESHOW MODE ONLY)

Ch. 29 16

Active Figure 29.23

(SLIDESHOW MODE ONLY)

v = E / B

Ch. 29 17

Quick Quiz 29.10a

Three types of particles enter a mass spectrometer like the one shown in your book as Figure 29.24. The figure below shows where the particles strike the detector array. Rank the particles that arrive at a, b, and c by speed.

(a) a, b, c (b) b, c, a (c) c, b, a (d) All their speeds are equal.

Ch. 29 18

Quick Quiz 29.10b

Rank the particles that arrive at a, b, and c by m/q ratio.

(a) a, b, c (b) b, c, a

(c) c, b, a (d) All their m/q ratios are equal.

Ch. 29 19Fig 29-7, p.901

Ch. 29 20Fig 29-8, p.901

Ch. 29 21

Quick Quiz 29.4

The four wires shown below all carry the same current from point A to point B through the same magnetic field. In all four parts of the figure, the points A and B are 10 cm apart. Rank these situations according to the magnitude of the magnetic force exerted on the wires, from greatest to least?

Ch. 29 22Fig 29-10b, p.902

Ch. 29 23Fig 29-13a, p.904

Ch. 29 24Fig 29-13, p.904

= r F

Torque

Ch. 29 25Fig 29-15, p.905

Magnetic Moment

Perpendicular to the surface!

Ch. 29 26Fig P29-48, p.922

Hall Effect

Ch. 29 27Fig P29-53, p.922