SU Physics 205: Intro. to Quantum Physics
Spring 2001
with Dr. David Boness
This page is here for your convenience. Please remember that assignments are announced in class.
Midterm Exam date: Friday, April 27; Final Exam: Thursday, June 7, 10 am-noon.
Click here for topics to study for the Final Exam
Class meetings: MWF 10:45-11:35 in Bannan 301.
Office hours: MTWThF 11:45-12:35.
My email: dboness@seattleu.edu
My phone: (206) 296-5924.
Syllabus: Click here for the course syllabus. The online syllabus also has some relevant links on it.
Text: Paul A. Tipler and Ralph A. Llewellyn. Modern Physics, 3rd Edition. W. H. Freeman, New York, 1999. The publisher web page for this textbook is http://www.whfreeman.com/modphysics/. If our bookstore is out, try the University Book Store in Seattle, or the Barnes and Noble at University Village or online at www.bn.com, or go to www.amazon.com.
Week 1 assignments:
For Monday, March 26: Receive the syllabus in class. I will give a course overview, and introduce the distinction of "modern" physics.
For Wednesday, March 28: Read Ch. 3, sections 1 through 3.
Homework 1 (due on Wed., April 4, in class): Chapter 3: Problems 2, 8, 14, 15, and 21.
Some HW 1 final answers: 3-2: (a) 0.31 T, (b) 7.39E-6 m. 3-8: Find e = 1.59E-19 C.3-14: Hint: Note that u(lambda)d(lambda) = u(f)df, and c=f lambda. 3-15: (a) 1.07 mm; (b) 2.80E11 Hz; (c) 1.54E9 W total power. 3-21: (a) 878 nm for lambda_m; (b) 1.77E20 photons/s; (c) 1.10E13 photons/s.
Web links for further reading:
A Brief History of the Electron: (Chapter 3) http://www.egglescliffe.org.uk/physics/particles/electron/electron.html
Millikan's Oil Drop Experiment (Chapter 3, page 127) http://www.aip.org/history/electron/
Millikan's Oil Drop Experiment (Chapter 3, page 127) http://web.mit.edu/afs/athena/course/8/8.13/JLExperiments/JLExp_02.html
Derivation of Compton's Equation (Chapter 3, page 148) http://web.mit.edu/afs/athena/course/8/8.13/JLExperiments/JLExp_01.html
For Friday, March 30: Read Ch. 3, the whole chapter.
Week 2 assignments:
For Monday, April 2: Re-read Ch. 3.
Reading quizlet 1 on Ch. 3.
For Wednesday, April 4: Read Ch. 4, sections 1 and 2.
More information about Rutherford's scattering experiment can be found at this PDF file.
Homework 1 is due in class.
Homework 2 (due on Wed., April 11, in class): Chapter 4: Problems 2, 6, and 12.
For Friday, April 6: Read Ch. 4, sections 2 and 3.
Week 3 assignments:
For Monday, April 9: Read Ch. 4, sections 2 and 3.
Reading quizlet 2 postponed until Monday, April 16.
For Wednesday, April 11: Read Ch. 4, sections 4 and 5.
Homework 2 (problems 2, 6, and 12) is due in class.
Homework 3 (due on Wed., April 18, in class): Chapter 4: Problems 14, 16, 19, and 24.
Final answers:
4-14: As alert physics student Matt Rust has noted, the "h" in the problem 4-14 statement for a_0 should be "h-bar."
4-16: n_Earth = 3E74 or so!; Delta E = 0.25E-40 J; r still same because of super small Delta r (find Delta r).
4-19: (a) r_muonic = 2.56E-4 nm; E_muonic = 2813 eV; (c) lambda_infinity = 0.441 nm.
4-24: (a) E_1 = -6.804 eV, E_2 = -1.701 eV, E_3 = -0.756 eV; (b) lambda_alpha = 243 nm, lambda_beta = 205 nm.
Friday, April 13, is Good Friday, a University holiday.
Week 4 assignments:
For Monday, April 16: Read Ch. 5, sections 1 and 2.
Reading quizlet 2, on all of Chapter 4.
For Wednesday, April 18: Read Ch. 5, sections 3 and 4.
Homework 3 is due in class.
Homework 4 (due on Wed., April 25, in class): Chapter 5: Problems 4, 7, 9, 12, 17, and 22.
Final answers:
5-4: (a) 0.0183 nm, (b) 4.27E-4 nm, (c) 2.14E-4 nm.
5-7: (b) Find E_1 = 2.05 eV and E_2 = 8.20 eV from the general expression you are asked to derive.
5-9: (a) 0.445 fm, (b) 6.18E-3 fm.
5-12: (a) 0.210 nm, (b) 35.7 degrees.
5-17: (b) 50 m/s, (c) 50 m/s, (c) Delta x = (2 * pi) / Delta k.
5-22: (a) 3.15 nm, (b) 5.74 cm.
For Friday, April 20: Read again Ch. 5, sections 3 and 4.
Week 5 assignments:
For Monday, April 23: Read Ch. 5, sections 5 through 7.
No Reading quizlet this week
For Wednesday, April 25: Read Ch. 6, sections 1 and 2.
Homework 4 is due in class.
For Friday, April 27: Review through section 5-2.
Midterm Exam today on material through section 5-2. You may bring in one sheet of notes which you prepare yourself. This is a closed-book exam.
Week 6 assignments:
For Monday, April 30: Read Ch. 6, sections 1 and 2 again.
No Reading quizlet this week
Homework 5 (due on Mon., May 7, in class): Chapter 6: Problems 2, 3, 7, 9, and 17.
Final answers:
6-2: This is a "show that" problem.
6-3: (a) Find V(x) = hbar^2 x^2 / (2 m L^4), (b) Give the equation for the potential energy for the corresponding system from your intro physics textbook.
6-7: (a) Find V(x) = (hbar^2 / m L^2) (2 x^2 - 1). (b) Sketch it.
6-9: (a) P(x) Delta x is approx. equal to 0.0004, (b) 0.0035, (c) 0.
6-17: (b) 0.02.
For Wednesday, May 2: Read Ch. 6, section 3.
For Friday, May 4: Read Ch. 6, sections 1 through 3 again.
Week 7 assignments:
For Monday, May 7: Read Ch. 6, section 5.
Reading quizlet today on sections 6-1 and 6-2.
Homework 5 due date is POSTPONED until Wednesday (May 9) to allow more time for lecture background.
For Wednesday, May 9: Read Ch. 6, section 5.
Homework 5 is due in class.
For Friday, May 11: Read all of Ch. 6 yet again.
Homework 6 (due on Fri., May 18, in class): Chapter 6: Problems 11, 15, 24, 27, and 37.
Final answers:
6-11: Macroscopic systems typically have huge n values when treated with quantum mechanics equations (which is as it should be). Here, n is about 3E19.
6-15: Find L = 0.795 nm. Alert physics student Joe Hubley noticed the sqrt(3) factor mistake in the Instructor Manual final answer I had previously listed here on this page.
6-24: Sketch these. Note that the probability density as a function of x is always positive.
6-27: This is a "show that" problem..
6-37: (a) k_2 = k_1 / sqrt(2); (b) R = 0.0294; (c) T = 0.971; (d) 9.71E5 continue past the step. What does classical physics predict?
Here are some PDF files giving more background and discussion of topics in Chapter 6 of your textbook:
Regarding graphical solution of the finite square well problem:
About transitions between energy states:
An electrical engineering application (the tunnel diode):
Week 8 assignments:
For Monday, May 14: Read Ch. 6, section 6.
No reading quizlet this week.
For Wednesday, May 16: Read Ch. 7, section 4, on electron spin. This is the only section of this chapter that we will cover.
For Friday, May 18: Read Ch. 9, sections 1 and 2.
Homework 6 is due in class.
Homework 7 (due on Mon., June 4, in class): Chapter 9: Problems 4 and 5; Chapter 10: Problems 3, 7, 12, 22, 23, 28, and 32.
Final answers:
9-4: Example 9-1 is close to this problem. For CsI: E_d = 3.44 eV; for NaF: E_d = 5.72 eV; for LiI: E_d = 3.72 eV.
9-5: (a) -5.39 eV, (b) 4.67 eV, (c) 0.27 eV.
10-3: n = 4.64.
10-7: (a) 1.23E-7 ohm m, (b) 7.00E-8 ohm m.
10-12: (a) rho = 1.22E-7 ohm m, (b) rho = 9.96E-8 ohm m, (c) rho = 7.04E-8 ohm m.
10-22: (a) lambda = 1.09E-6 m.
10-23: (a) lambda = 1.68E-6 m, (b) lambda = 177 nm.
10-28: Give the appropriate qualitative answer.
10-32: (a) V_b = 27.8 mV, (b) V_b = 12.0 mV.
Week 9 assignments:
For Monday, May 21: Read Ch. 10, sections 1 and 2.
No reading quizlet this week.
For Wednesday, May 23: Read Ch. 10, sections 3 and 4.
For Friday, May 25: Read Ch. 10, sections 5 and 6.
Week 10 assignments:
Monday, May 28, is a university (and national) holiday.
No reading quizlet this week.
For Wednesday, May 30: Read Ch. 10, sections 5 and 6.
For Friday, June 1: Read Ch. 10, sections 6 and 7.
Week 11 assignments:
For Monday, June 4: Review of which topics to concentrate on for the Final Exam, and course evaluations.
Final Exam: Thursday, June 7, 10 am-noon.
Have a safe, fun, and rewarding summer!