Physics & Astronomy

Physics 123 Announcements

Here is the figure that doesn't exist on p. 577 (in quiz question at end of Homework 30).

On Homework #32 and #33, please refer to table 44.2 in place of the non-existent A.3. Unfortunately, this table has been abreviated. A more complete table is available at http://www.chem.ualberta.ca/~massspec/atomic_mass_abund.pdf

Look for other revisions for these assignments in Home Work Material

Practice Exam 4
Answers
1. (a) –0.976c
(b) 1.9x10^42 J
2. (a) 657 nm
(b) -0.6c
3. 0.998c
4. (a) T=5800 K
(b) 19 ly
5. (a) 271 nm
(b) 0.7 fm
6. (a) 1280 nm
(b) 2.78
7. (a) 0.208 MeV
(b) 52 degrees
8. (a) 8.9x10^8 y
(b) 341.4MeV and 343.7 MeV
(c) 0.49 MeV
9. (a) 105 MeV
(b) 0.156 MeV

Quizzes Section 1
Quizzes Section 2
Quizzes Section 3
Quizzes Section 4

Please ignore Equations referenced in the hint of Prob. 7-3. They are the wrong ones from an earlier edition of the book.

Your packet is written for the 6th edition of the text. Unfortunately, I belatedly learned most class members will be using the 7th edition. This is not a big deal. A few corrections for the 7th edition are marked electronically in red here. It would be good to take a moment to update your course packet by pen. There are about 9 minor changes; most pages are unaffected. If you are using the 5th edition, that is also okay. You can compare reading assignments between editions here.