Transcript Introduction to Physics 260

Introduction to Physics 260
Dr. Phil Womble
[email protected]
Applied Physics Institute 270 781 3859
Office Hours: MWF 8-5, TR 1-5 API
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Are you in the right place?
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This is University Physics II
Pre-requisites: Physics 250 and Math 126
 Co-requisites: Math 227
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What is different than Physics 250?
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More Mathematically based
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Some concepts are difficult to visualize
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By that, I mean calculus
What is a “field”? No, it is not a place to put
cattle.
Some say 260 is much harder than 250
In a way, this is true
 In a way, this is false
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Syllabus
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Contact Info:
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Dr. Phil Womble
[email protected]
I travel A LOT! Email is the best way to find me.
I usually don’t read my email at home so usually email after 5
pm is not answered until the following morning.
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Particularly on Homework Night!
You are always welcome to come out to the API and ask
questions.
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Overall Goals
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University Physics II is an introduction to Electricity & Magnetism
for students in the civil and mechanical engineering degree
programs. The emphasis will be on developing problem solving
skills and understanding the basic concepts and definitions used
in the study and application of Electricity & Magnetism.
Also an understanding that these concepts are not independent
of other fields of physics but part of the larger picture of physics
will be emphasized.
Finally, we wish to give the student confidence to tackle simple
wiring problems in their home and their work environments. Of
course, we will not be held liable for any fires, deaths, and
general mayhem which may result
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Grade Weighting Factors
3 In-class exams are worth 60% (20%
each)
 Final Exam is worth 30%
 Homework is worth 10%
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3 In-class Exams
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Each worth 20% of your final grade
Usually, 5 problems long.
I supply all the formulae that you need (and
some that you don’t need)
 30 minutes of the class period before an exam
is dedicated to test review
 I hand out old exams for you to review
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These “practice” exams are examples of problems
and problem-types that I have previously given.
Do not expect a problem to be repeated in its
entirety from a practice exam.
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Exams Cont’d
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Exams consist of 80% of
homework/class examples
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Again, these are not exact copies but very
close
20% of the material is based on
classwork/homework but will be an
entirely new situation
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I call it “the joker problem”
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Exam Schedule (tentative)
Tuesday, Feb 14th
 Thursday, Mar 4th
 Thursday, April 10th
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“The More Work Shown, The More
Credit Given”
This phrase is repeated at the beginning
of EVERY test
 It means that I grade on your problemsolving capabilities not an answer.
 I could care less if you ever got a correct
answer in this class.
 BUT YOUR PROBLEM-SOLVING
TECHNIQUE SHOULD BE GOOD!
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Final Exam
Essentially a two-hour in-class exam
 We will review during the final class
period
 Consists of 10 questions
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Comprehensive!
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Final Exam Schedule
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TR 8:00-9:20
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Tuesday, May 6th , 8:00-10:00 am
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How to Write Up a Physics Problem
for Tests
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Draw a diagram (if possible)
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Label all forces, angles, etc.
Assign variables to the problem
 Don’t just use math, write what is going
on in your mind.
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Define what you need to find
 Define what initial values you have
 If nothing else, perform dimensional
analysis i.e look at the units!
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STEP ZERO: Convert to SI units
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Why?
Fundamental electrical units such as volt,
amp, ohm, and farad (among others) are SI
units.
 Our equations are set up to give us SI units
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If you see 4pe0 then or just m0/4p, then the
equation is set up for SI units
So your first step is always to convert to
SI units!
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Homework
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Homework is a group of PDF files on the
server
You must print out the pages, perform your
work within the allotted space.
Answers must be neat!
I have instructed my grader to not give credit if
they do not understand a solution.
The burden of proof that you have solved the
homework correctly lies on you!
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HW Due Dates
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HW Due Dates have a tendency to “slide
back” but never “forward”.
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Collaboration is more than Copying
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As adults, you are on your honor to ensure
that you do not copy your homework
 There will be no one to copy from on a test.
Therefore it is in your best interest to
understand the homework.
 It is in your best interest to be selfish.
 It is in your best interest to help your
classmates
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No one really knows a subject until they explain it to
someone else.
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Attendance
I don’t have an attendance policy
 YOU are responsible for everything that I
say in class
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I have a tendency to ad-lib from these notes
and these “ad-libs” may also be on the
exams.
These notes will be placed on the
Physics 260 server (under “Course Info”
on the Physics website)
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