Download Physics 223 Syllabus - Salisbury University

Physics 315 – Electricity & Magnetism
Spring 2015
Instructor
Dr. Joseph W. Howard - “Joe”
Office/Phone: Henson Science Hall 305C, 410-548-5393
eMail: [email protected]
Office Hours: TR 10:00a.m. – 12:00p.m., T 2:00p.m. – 3:00p.m., F 10:00a.m. – 12:00p.m.
Class Hours: MW 11:00 a.m. – 12:40 p.m., Henson Science Hall, Rooms 359 / 357
On the Web: https://myclasses.salisbury.edu/
Textbook
Required Text
Introduction to Electrodynamics, 4rd Edition, Griffiths, David J., (Pearson - 2013: ISBN:10
0-321-85656-2).
Course Description, Objectives, & Policies
Description
Study of electricity and magnetism. Topics include Coulomb's law, electric and magnetic
fields, electromagnetic induction, Maxwell's equations and an introduction to electromagnetic
waves.
Prerequisite: PHYS 223 (Physics II), PHYS 309 (Math Physics), & Math 311 (Differential
Equations), Recommended: MATH 310 (Calculus III – vector calculus)
Course Goals
1. CONTINUE TO DEVELOP A GOOD FUNCTIONAL UNDERSTANDING OF PHYSICS
The goal of physics is to understand the physical universe. An understanding of the subjects
covered in the class will help prepare those of you who plan on a career that requires a thorough
knowledge and understanding physics. Beyond that, an understanding of the physical principles
may help you perceive the world around you in a more comprehensible, enjoyable, and
fascinating way.
2. DEMONSTRATE AN ABILITY TO THINK CRITICALLY, LOGICALLY, & ANALYTICALLY WHEN
SOLVING PROBLEMS
In order to solve a problem, you must critically examine the information available in a given
situation, determine an effective method to approach the problem, and carry through to the
solution, including a critical examination of the final answer to see if it is reasonable. To
understand a physical situation and to solve physics problems requires the ability to use
mathematical expressions that are solvable and that represent the situation. Students should be
able to see the linkage between the math used to that of the physical principles involved. These
skills are not only essential to solving problems in physics, but to solving problems in general,
and are applicable to many situations in many different environments.
3. UNDERSTAND CLASSICAL THEORIES OF ELECTRIC AND MAGNETIC PHENOMENA
There are many topics to cover when exploring the fascinating realm of electricity and
magnetism; vector analysis, electrostatics and magnetostatics in vacuum and in matter,
electromagnetic induction, electric potential, electrodynamics, and the glory of Maxwell’s
Equations for electromagnetic waves.
4. DEVELOP A PHYSICAL UNDERSTANDING OF VECTOR FIELDS BY STUDYING ELECTRIC AND
MAGNETIC FIELDS IN DEPTH
Electricity and Magnetism are a somewhat perplexing result of the many interesting
interactions of moving nuclear charges and the associated “fields” they produce. To investigate
the consequences of either physical phenomenon we will need to understand the mathematics
which is the foundation for most modern scientific theories.
Policies
Attendance: Attendance is required. You must notify the instructor in advance if you are
unable to attend a class period.
Cell Phones: Please turn off your cell phones (or select a silent ring) during the class
lecture. You may not talk, text, or facebook on the phones in the classroom during
lecture.
Writing Requirement: Homework assignments and exam problems will require a written
response. These responses must be grammatically correct with proper spelling and
punctuation.
Students with Disabilities: Any student in this course who has a disability that may
prevent him or her from fully demonstrating his or her abilities should contact me
personally as soon as possible so that we can discuss accommodations necessary to
ensure full participation in this class and facilitate educational opportunities.
Academic Integrity: Academic integrity is at the heart of education because there is no
doubt that honor and the quest for knowledge are inexorably intertwined. Salisbury
University is an academic community dedicated to the achievement of intellectual
growth where the pursuit of freely exchanged ideas and active study is an essential
element of academic excellence and development. Students and faculty are expected
to meet the highest possible standards of personal, ethical, and moral academic
conduct. These standards require personal integrity, a commitment to honesty without
compromise, as well as truth without equivocation. Academic trust means respecting
these truths and principles, without which no university can exist. Academic
Dishonesty: This instructor adheres to the policy of academic misconduct as it
appears in the college catalog and outlined in the student handbook.
Course Philosophy
This is a physics class and, therefore, it has similarities to all other physics classes. The
theories used to explain electricity and magnetism are very conceptual and highly mathematical
in nature and will require a great deal of effort to build an understanding, create mental models,
and develop a mastery of the subject. This course is more than a study of electricity and
magnetism. It is a study of the behavior of “fields” – quantities which vary continuously in space
and time. A student who took a narrow view of the course might object to all the emphasis on the
mathematics. He/She might make some comment such as, “I want to learn about
electromagnetism. Why do we have to waste all this times studying coordinate systems, Green’s
functions, delta functions, Stoke’s theorem, orthogonal polynomials, Bessel Functions, and
muiltpole expansions?” The answer is that the modern physics student doesn’t have time to
study all the fields that arise in physics – compressible fluids, sound waves, nuclear force fields,
humidity, temperature, radiation absorption and emission, density, Schröedinger Waves,
gravitational fields, heat flow, stress waves in solids, quantum chromodynamic fields, and so on.
But the mathematics of all of them is similar; vector calculus and partial differential equations.
Therefore, our goal is not only to learn the physical content and applications of electrodynamics,
but also to learn the mathematical tools which are key to the understanding and are much more
widely applicable. So don’t view the mathematics as something that we must put up with in order
to study electromagnetism. The mathematics is the heart of the course.
Some students believe that if they can follow the lectures in class, then they have learned all
they need to know about electrodynamics. This is not true. A student must do a significant
amount of work outside of class thinking about, and interacting with, the course material. No one
ever learns physics by simply reading about it or listening to someone talk about it. You learn it
by making the effort to understand the material, building mental pictures, and by solving
problems using the principles learned. The standard requirement in a college class is that you
spend two hours outside class working on the material for every hour in class. Since this is a
three-hour class, you should plan on spending at least six hours per week outside of class
interacting with the material and solving problems. Few students will be able to succeed in this
class without investing more than that amount of time.
As stated earlier, you can only learn by personally interacting with the material and solving
problems. Consequently, I emphasize three methods of learning in this class:
1. Reading and thinking about the assigned material before it is discussed in class.
2. Solving problems using the physics concepts and principles.
3. Discussing the material and solving problems in class, including working with your
classmates.
Thinking about problems and solving them on a regular basis will allow you to learn and
appreciate the subject matter in a natural way, without having to cram everything at the last
moment.
I want you to enjoy Physics 315. The material we will be covering is fascinating and
applicable. Its implications can be observed in almost everything you interact with everyday. In
order to make this class as interesting and useful as possible, I will need to get feedback from
you. Please feel free to ask questions in class and to come by my office during office hours.
Course Structure & Assignments
The course will be divided into four modules and may consist of the following graded
assignments:
1. Class Activities
2. Homework Problems
3. Midterm Exam or Final
During each module, I will distribute detailed descriptions of the material and homework
problems assigned. A calendar listing the tentative dates for course subject material is attached
as the last page of this syllabus. The calendar may be revised at the discretion of the
professor.
Homework
Homework will consist of problems assigned mostly from the text. Homework will be due by
5:00 p.m. on the date specified. It may be turned in during lecture or deposited in the box
outside my office. Here are some suggestions for the homework assignments:
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Read the problems as soon as you get them. You don’t have to spend any time
working on them; just think about them as you read and study the material.
Don’t procrastinate!! You will have at least a week to work on the problems. Don’t
wait until the last minute to do them. In particular, you will have an opportunity to
ask questions in class to help you further understand the problems.
Ask Questions!! If you are having problems with the homework, seek help!! You
may discuss the problems with your classmates as well as with me during office
hours.
Although you may discuss the homework with your classmates, all work handed in must be
your own. Copying another person’s work is plagiarism, and will be considered cheating. I
encourage you to talk with others in order for you to get a general understanding of the work.
However, each person must work out detailed solutions of the problems individually. Doing the
homework is the best way to prepare for the exams since test questions will be similar to
problems assigned for homework.
Class Activities
You will be expected to ask and answer questions and to participate actively in the class and
during in-class activities. You are also expected to actively collaborate in group problem-solving
sessions in the class and/or to present homework solution ideas to the entire class.
Active Participation: Because learning requires active participation, and not just passive
listening, we will be doing various activities in the classroom that involve student
participation. These activities will help the student learn and give the instructor valuable
feedback on how well the students have mastered the course material.
Group Work: Occasionally, classroom groups may be created during the semester. The
groups will allow you to work together with your peers to understand the material.
Group activities will include discussion of homework, as well as working on other
problems designed to help you understand the material. All activities in the groups will
be cooperative, not competitive. A good group member is not necessarily one who
knows the answers. A good group member is one who comes prepared and regularly
participates in the work, enters into the spirit of trying to help his or her fellow group
members answer questions, work problems, and better understand the material.
Exams & Final
There will be three mid-semester exams. The final will be comprehensive, covering material
from the entire semester. The best preparation for these tests is a thorough understanding of the
material and an understanding of the problems done for homework.
Grading
3 Midterm Exams (3 x 14%)
Homework Assignments
Class Activities
Final Comprehensive Exam
42%
32%
8%
18%
------ Total = 100%
** Grade Scale: The following criteria will be used for determining letter grades:
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90 -100% = A: Superior Work. Student demonstrates a thorough and complete
understanding of the subject.
80 - 89% = B: Excellent Work. Student demonstrates an above average
understanding of the subject.
70 - 79% = C: Good Work. Student demonstrates an average understanding of the
material.
60 - 69% = D: Fair Work. Student demonstrates below average understanding of
the material and has completed most of assignments.
0 - 59% = F: Unsatisfactory Work. Student does not demonstrate and adequate
understanding of the subject and has not turned in all assignments.
Inclement Weather
In case of inclement weather, call the Gull Line at 410-546-6426 for weather related closing
information or check the Salisbury University web page.
Important Notice
If your Physics 315 grade will affect any of the following: 1) whether you receive or retain a
scholarship (athletic or otherwise); 2) your eligibility to participate in any university sponsored
activity; 3) your standing with your fraternity, sorority, the university, or any other student
organization; NOW IS THE TIME TO BECOME CONCERNED - NOT AT FINAL EXAM OR
AFTER FINAL GRADES HAVE BEEN DETERMINED!! Please do not wait until the last minute,
when it will be too late for anyone to help you! Also remember, we are here to learn knowledge
and most of all have FUN!!
(Ma da 4s b w/u!)
Physics 315 – Physics II – Spring 2015
Tentative Schedule
Dates
Concepts
Selected From Chapters
Vector Analysis, Differential &
Integral Calculus, Coordinate
Systems, Delta Functions
One
Electrostatic Fields, Divergence &
Curl, Potential, Work & Energy
One & Two
Jan. 26 – Feb. 25
Feb. 25
Exam One
LaPlace’s Eqn, Dipoles
Two, Three
Polarization, Electric
Displacement, Dielectrics
Three, Four
Mar. 2 – Apr. 1
April 1
Exam Two
Force & Biot-Savart Law,
Divergence & Curl of B-field,
Magnetic Potential
Four, Five
Magnetization, Auxillary Field,
Media
Five, Six
Apr. 1 – Apr. 29
April 29
Apr. 29 – May 15
Exam Three
Electromotive Force, Faraday’s
Law, Maxwell’s Equations
Seven, Eight
Detailed schedules will be provided during the semester.
Final Exam is Scheduled for Wednesday, May 20th, 10:45 a.m. – 1:15 p.m.