Physics 270: Electrodynamics, Light, Relativity and Modern Physics
Suggested Review Problems:
Chapter 29: # 16, 17, 23, 25, 47, 54
Chapter 30: # 3, 6, 12, 17, 20, 29, 34, 35, 37, 65
Chapter 31: # 9, 11, 17, 26, 28, 29, 40, 43, 50, 64
Chapter 32: # 12, 26, 38, 45, 48, 64, 67, 69, 78, 79
Suggested Review Problems:
Ch. 39: # 10, 11, 19, 21, 25, 37, 42, 47, 72
Ch. 40: # 5, 11, 18, 23, 37, 51, 52, 54, 61, 65
Ch. 41: # 19, 24, 35, 36, 42, 43, 47, 48, 49, 54
Ch. 42: #5, 10, 15, 49
- Midterm 3 on Thursday in class is optional. Two best scores of the
three midterms will be counted towards your final grade.
- You are allowed to bring one 8.5"x11" formula sheet to Midterm 3
A suggestion for your preparation of exams (I mentioned this several times in the lectures)
1)
2)
3)
The suggested review problems are listed below: (Use this also for final exam preparation.)
Chapter 33: #
Chapter 34: # 37, 49, 50, 54, 55, 57, 62, 66
Chapter 35: # 28, 34, 38, 43, 55, 56, 57, 58, 59, 67
Chapter 36: # 6, 14, 17, 26, 40, 41, 35, 38, 54, 75
Chapter 37: #14, 20, 24, 26, 28, 29, 31, 32, 37, 43, 60, 61, 62, 64
Chapter 38: # 8, 44, 46, 48, 56, 62, 65, 66, 67
Announcements:MAR 18
1) Reminder: 2nd Midterm Exam on April 14. Chapters 33-38 inclusive
2) Review: Stephen will hold a review session for materials in
Midterm Exam II on Tuesday April 12 in the regular class time and place.
3) Lecture on Thursday April 7 will be devoted to Principles of Special
Relativity (originally scheduled on April 12 on course syllabus)
Due to the cancellation of class on Thursday Feb 24, I ask that you
plan to stay till 3:50 on March 1 if possible.
The first 40 min will be problem review for the Mid-term Exam,
followed by lecture on Chapter 33 material.
Physics 270 is the third of a three-semester introductory physics sequence designed primarily for engineering students. The major topics covered in this course are magnetism and electrodynamics, alternating circuits, electromagnetic waves and optics, and an introduction to modern physics including special relativity and quantum mechanics.
Prerequisites: Physics 260, 261,
Proficiency in differential and integral calculus as well as vector
algebra is
expected.
Co-requisite: Physics 271, Laboratory
course.
Textbook: Physics for Scientists and Engineers, Volume II, 6th Ed., by Raymond A. Serway and John W. Jewett, Jr.
Course Information
The course consists of three parts -- Lecture, Recitation and Lab
The course web page, http://www.physics.umd.edu/courses/Phys270/Hu/index.html contains additional information along with links that you will need during the semester. Important announcements regarding exams, changes to the schedule or other items will be posted there and issued via comments in iLrn. Please check the course web page regularly.
Lecturer: Professor
B. L. Hu
Office: 4209 Physics Bldg
Phone:
301 405 6029, E-mail: hub@physics.umd.edu
Office
Hours: Tu Th 3:15-4pm or
by appointments
Teaching
Assistants:
Chappell. Isaac,
1322 Physics Bldg, Phone:
301-405-6185,
E-mail: ichappel@umd.edu
Ho, Kwan-Yuet (Stephen) 4223
Physics, Phone:
301-405-6192, E-mail: kwyho@umd.edu
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Lecture: |
Tu Th 2:00-3:15 pm |
All sections |
PHY
1412 |
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5 Recitation Sections: |
Th 8:00am- 8:50am |
Sec. 0301 |
EGR 2112 |
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Th 10:00am-10:50am |
Sec. 0303 |
PHY 3301 |
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Th 11:00am-11:50am |
Sec. 0304 |
PHY 3301 |
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Th 12:00pm-12:50pm |
Sec. 0305 |
PHY 1219 |
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W 1:00pm-
1:50pm |
Sec. 0306 |
PHY 4208 |
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Laboratory: Physics 271 |
· PHYS 271, is required. Physics 271(previous Physics 263A) is the laboratory part of Physics 270, and meets in room PHYS-3220. This course carries one credit and the grade is folded in with the Physics 270 course grade. You must complete PHYS 271 (do all the labs) in order to pass PHYS 270. If you do not pass this part of the course you will be required to repeat the entire course. ·
PHYS
271 is run separately and is taught and organized by Prof. Jawahery The labs meet for three hours a week. You are
expected to attend each class and will be allowed to make up labs only
under exceptional circumstances. For questions specific to the
lab consult the course web page,
or contact Prof..Jawahery or your lab
TA. ·
If you believe that you have
completed the lab in a previous semester, and want that to count for this semester's
course grade, go to Student Services (PHY
1120) during the second week of this semester to have your grade
verified this semester. |
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CORE Lab Science Requirement: |
PHYS 270 and PHYS 271 must be taken in the
same semester to count for CORE Lab Science. PHYS 270 taken along will NOT
count as a non-lab science for CORE. |
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Academic Integrity: |
It is assumed that all students understand
the academic integrity policy of the university and will neither give
nor accept any unauthorized assistance on any assignment in this
course. It is further assumed that each student has taken the honor pledge. |
Organizational
Details:
Lecture:
Attending the lectures, studying the text and working out the problems are necessary components to understand and gain proficiency of the course materials. The lectures will consist of explanation of concepts and derivations, worked examples along with demonstrations designed to enhance what you have read in the text. To extract the most from lecture, you should read the material in the text before the lecture. Although the lectures can only deal with a subset of topics in the book you are responsible for all the materials in each chapter in the assigned reading. Although lecture time is pressed due to the huge amount of materials need to be covered in this course, do feel free to ask questions in class. It is better to get puzzling or sticky points cleared out or up right away than putting them aside and forgetting about them. Muddled things tend to get worse in time. Also if you don't understand something, very likely many other students don't either. I enjoy discussions with you out of class too.
Most of the lecture time will be spent describing the physical principles that you must learn to understand the material, but the most important aspect of this course is problem solving. You cannot adequately learn the material by simply listening to the lectures and reading the textbook. The knowledge that you gain that way – passive learning -- is superficial and temporary compared with what you learn by confronting and solving problems. Active learning is gained by working out homework assignment problems consistently and diligently.
On-line Help: Your secondary source of help are the on-line tutorials and worked examples provided through iLrn. You should spend time with these aids if you are having trouble with some of the concepts.
Homework:
First, some
advice on basics: Study all the
examples worked out in the
lectures and in the book, including problems with solutions in the
Student
Solutions Manual (marked with a box) and problems with coached
solutions
(marked with a www globe sign). This helps you to get acquainted with
problem
solving in realistic situations. Then do the assigned problems -- they
should
be considered the minimum, not the maximum, that you should perform.
There are
many more good problems in the textbook; do as many as you can find
time for. When
working out problems, solve them algebraically:
i.e., derive
an algebraic expression for your result, plugging in the numbers only
in the
last step. This is of both practical and basic advantages:
carrying numbers in every step as you solve
the problem is more prone to generating mistakes. More importantly,
with
symbols denoting physical quantities
you can see
the physics concepts and rules applied and derived in every step of the
way
towards a solution, which you cannot with numbers.
It is very important to adhere to this rule to
establish the good habit of working problems, from small separate ones
you see
here to huge coordinated problems in research projects.
Now the technical
part: Homework will be done
online using BCA/iLrn. While similar to WebAssign,
used in past semesters, iLrn is more
powerful in
providing practice tests, tutorials and other helpful tips.
The URLs for thise site is:
BCA/iLrn http://BCA.brookscole.com
For iLrn, your username & passwords are the same as the 9 digit UID number on the UMEG roster . The pass word can be changed when you enter the program.
The site is best
accessed with a current version of Mozilla
or Microsoft Internet Explorer running Java 2
(although I've heard Netscape may work) through the above link (which
takes you
directly to the
If you run into trouble check the system requirements (click on the “systems requirement” tab at the bottom edge of the iLrn front page, the front page also contains links to software updates you may need to install if you are using your own computer).
To log in, DO NOT select “First
Time User ” - just login
using your
username and password.
For technical questions encountered while using iLrn,
-- e.g., you think you get the correct answer but the machine keeps
denying it,
you can email your TA s, who are
probably more
computer savvy than your professor. For systematic structural problems
you
should alert your professors in 270 to contact an iLrn
representative.
You will generally have a week to do each problem set. Problems are assigned for each set on Monday morning and due by noon the following Monday (See table below for due dates.). Late homework will receive no credit. For most homework assignments, you will have an unlimited number of tries to do each problem. You will receive feedback from the program about the correctness of your answers.. You are encouraged to study and discuss with your classmates, but you should each work out all of the problems on your own. Your effort correlates strongly with your performance in quizzes and exams.
MORE
SUGGESTIONS ON USING iLrn:
(updated
02/02/05)
On the 1st take of the
assignment load /
view all problems then click on “End Assignment”. It’s really
important
that you view every problem in the assignment or the numbers will be
different
than your printed version. This will bring you to the details screen
where you
can “Print Assignment as taken”. Then you have a paper copy to
work on
your HW.
Subsequent takes on the whole assignment press “Save Progress” NOT “End Assignment”. Only press “End Assignment” when you have answered / submitted all of the problems in assignment.
Recitation:
In the weekly recitation section your TA will do three things: 1) to review the major physical principles and techniques in topics discussed in the lectures, 2) to work out examples in detail, analyzing problem solving strategies and explaining the physical meaning of the results. 3) to give out quizzes, as a way to monitor your progress. The main purpose of the recitation and the TA’s foremost task is to train you in problem solving skills. Homework from the previous week along with the quiz will also be discussed in the recitation period. Your TA will take attendance. Your participation in discussions in the sections will be noted by the professor through consultations with your TA, which can make a crucial difference in borderline grade considerations.
Quizzes:
A quiz of 15
minutes will be given every week in your
recitation sections based on
the previous
week's lecture, as well as reading and homework assignments.
The purpose of the quizzes
is to monitor your
understanding of the subject and the development of skills in problem
solving,
from the fundamental concepts to practical applications. A
course
like this is so compact and fast-paced that weekly monitoring of your
own
progress is highly recommended to avoid an accumulated backlash or
collapse. Your graded quizzes will be
returned and the solutions of these quizzes will be discussed during
the
recitation. There are 11 quizzes
(no quiz during the weeks of the three
mid-term exams), the one with the lowest score is dropped in making up
the
course grade. The quizzes will be closed book, no formula sheets are allowed – I
expect you to be
able to remember materials discussed in the prior week, if not the
whole semester J.
Exams:
There will be three midterm exams given on lecture days (see below) and one final exam. You must take the final exam to pass the course.. The dates the exams will be given are listed in the schedule. The third midterm exam is optional, only the two best scores are counted. There will be no make-up exams. All exams will be closed book.
Formula Sheet You will be allowed one 8.5 x 11 sheet of paper (front and back) for each midterm exam, thus totaling 3 pages for the final exam.
Calculators: You can use a standard scientific calculator to all exams, but not programmable ones. Your calculator should provide arithmetic, trigonometric, exponential, logarithmic functions, and arbitrary roots and powers.
Fire Alarm If there is a fire alarm or bomb threat, the exam will be held at the scheduled time in another room. If the University is closed because of weather, the exam will be held the next class day.
Student ID Numbers:
The
university will no longer use your social security number
as your SID No. All students will now be provided with a U ID No. If
you don't
know yours, you can obtain it by logging into Testudo
and viewing your class schedule. (Visit here
for
more information.) Photo ID cards issued since June 2003 should have
the U ID
No. displayed on the front.
Grade
Composition:
Homework: 110 pts
(Each problem counts 1 point, you can keep those over 110 as bonus points)
Quizzes: Best 10 out of 11 100 pts
Mid-term Exams: best 2 out of 3 300 pts
Final Exam 240 pts
Lab (Physics
271)
250 pts
Letter
Grades Final letter grades are
based upon the distribution of class scores and will not be known until
the end
of the semester. Recognizing that the actual divisions will most likely
be
different, you may use the following as an approximate
guide, but
not view it a promise or projection of a specific grade:
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A: |
100
- 80% |
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B: |
70
- 80% |
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C: |
55
- 70% |
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D: |
45
- 55% |
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F: |
0 -
45% |
We
usually find gaps in the distribution to make the grade divisions, so the borders can
deviate from the above by quite some percentage points.
Regardless of your point accumulation, if you do not take the final and pass the lab you will get an F!
Lecture,
Exam and Quiz
Schedule:
This course will cover Chapters 29-41 of Serway & Jewett, 6th ed. (SJ6) Volume II.
The Exam dates and targeted schedule of lectures and are listed below:
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Week |
Lecture
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Date |
Topics |
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Quiz
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1 |
1 |
Jan 27 |
Bookkeeping, Magnetic Force |
29 |
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2 |
2 |
Feb 1 |
Charges in a Magnetic Field |
29 |
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1 |
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3 |
Feb 3 |
Sources, Biot-Savart Law |
30 |
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3 |
4 |
Feb 8 |
Gauss Law, Ampere’s Law |
30 |
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2 |
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5 |
Feb 10 |
Faraday’s Law, Motional EMF |
31 |
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4 |
6 |
Feb 15 |
Maxwell’s Equations |
31 |
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3 |
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7 |
Feb 17 |
Inductance |
32 |
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5 |
8 |
Feb 22 |
Inductance |
33 |
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4 |
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9 |
Feb 24 |
Alternating Current |
33 |
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6 |
10 |
Mar 1 |
AC Circuits |
33 |
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Mar 3 |
Mid-term Exam |
29-32 |
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7 |
11 |
Mar 8 |
Electromagnetic Wave |
34 |
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5 |
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12 |
Mar 10 |
Nature of Light |
34,35 |
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8 |
13 |
Mar 15 |
Geometric Optics |
35 |
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6 |
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14 |
Mar 17 |
Images from Lenses and Mirrors |
36 |
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9 |
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Mar 21 -25 |
Spring Break |
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10 |
15 |
Mar 29 |
Interference |
37 |
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7 |
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16 |
Mar 31 |
Interference |
37 |
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11 |
17 |
Apr 5 |
Diffraction & Polarization |
38 |
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8 |
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18 |
Apr 7 |
Diffraction & Polarization |
38 |
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12 |
19 |
Apr 12 |
Special Relativity: Principles |
39 |
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April 14 |
Second Exam |
33-38 |
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13 |
20 |
Apr 19 |
Special Relativity: Consequences |
39 |
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9 |
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21 |
Apr 21 |
Relativistic Energy & Momentum |
39 |
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14 |
22 |
Apr 26 |
Quantum Physics vs. Classical Physics |
40 |
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10 |
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23 |
Apr 28 |
Quantum Physics: Particle vs. Wave |
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15 |
24 |
May 3 |
Quantum Mechanics |
41 |
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11 |
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25 |
May 5 |
Quantum Mechanics |
41 |
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16 |
26 |
May 10 |
Atomic Physics: Bohr Model and Laser |
42 Sec.1-3,9-10 only |
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May 12 |
Third Exam (Optional) |
38-41 |
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Best 2 of 3 exams are counted |
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May 19: 10:30 am
- 12:30
pm Final Exam (Comprehensive)
Please
mark on
your calendar this date and time
Please Note Again: You will get an F if you don’t take the final exam or pass the lab (Phys. 271).
|
Week |
HW # |
Due Date |
Problems from Serway & Jewett, 6th ed. Volume II. |
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2 |
Homework |
will be |
assigned on Mondays, due the following Monday at noon |
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3 |
1 |
Feb 9 |
Chap 29: 8, 14, 18, 28, 31, 45, 49, 54, 64, 71 |
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4 |
2 |
Feb 14 |
Chap 30: 9, 10, 14, 23, 38, 39, 42, 54, 59, 64 |
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5 |
3 |
Feb 21 |
Chap 31: 7, 15, 18, 22, 24, 25, 31, 32, 39, 53 |
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6 |
4 |
Feb 28 |
Chap 32: 8, 11, 22, 32, 37, 42, 52, 58, 63, 76 |
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7 |
5 |
Mar 9 |
Chap 33: 6, 21, 25, 29, 34, 43, 49, 50, 53, 54 |
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8 |
6 |
Mar 14 |
Chap 34: 10, 17, 20, 30, 32, 35, 52, 59 |
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9 |
7 |
Mar 21 |
Chap 35: 4, 9, 11, 18, 20, 22, 30, 33, 40, 69 |
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10 |
8 |
Mar 30 |
Chap 36: 3, 18, 19, 23, 27, 45, 46, 56, 59, 65 |
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11 |
9 |
Apr 4 |
Chap 37: 3, 9, 11, 19, 21, 33, 36, 39, 41, 65
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12 |
10 |
Apr 11 |
Chap 38: 3, 7, 13, 15, 17, 25, 30, 39, 42, 58
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13 |
11 |
Apr 25 |
Chap 39: 8, 12, 17, 18, 23, 28, 33, 41, 48, 53 |
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14 |
12 |
May 2 |
Chap 40: 4, 16, 19, 25, 30, 38, 42, 43, 46, 50 |
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15 |
13 |
May 9 |
Chap 41: 2, 12, 16, 18, 21, 27, 30, 31, 38, 55 |
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16 |
14 |
May 16 |
Chap 42 (sec. 1-3. 9-10 only): 2, 3, 7, 48, 50 |
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Remember: |
Always |
derive |
results in algebraic expressions before putting in numbers |
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University of Maryland Physics DepartmentUniversity of Maryland College Park
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Physics is PhunQuestion
of the week
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