Dr. Tatiana Erukhimova
[year]
Atmospheric Thermodynamics
Elementary Physics and Chemistry
Gerald R. North
Tatiana L. Erukhimova
Texas A & M University
SLATE award: 2008, 2009, 2011
2012 Distinguished Achievement University-Level Award in
Teaching
2009 AFS College-Level in Teaching
2013 John E. Trott, Jr. Award in Student Recruiting
Sigma Xi’s Outstanding Science Communicator Award,
2014
Can you make a light bulb work
with a battery and a wire?
“Minds of Our Own”
by Dr. Matthew H. Schneps and Dr. Philip M. Sadler
Harvard-Smithsonian
Make your own MOTOR!
All you need is a battery, a nail, a small magnet, and a
wire (foil works better)
http://en.wikipedia.org/wiki/Homopolar_motor
Overview of Today’s Class
•Syllabus and Course requirements
•Tricks to survive
•Mechanics Review and Coulomb’s Law
Syllabus
Instructor Dr. Tatiana Erukhimova
Homepage http://faculty.physics.tamu.edu/etanya/P208/
Office: Mitchell Physics bldg (MPHY), Room 308
Phone: 845-5644
E-mail: etanya@tamu.edu
Class times: MWF: 9:10 am to 10:00 am
Sections 521, 522, 525, 526
Location: MPHY 205
Office hours:
Monday, Wednesday, Friday 1:30pm – 3pm or
by appointment
There will be recitation this week!
For the lab:
Read Physics 208 WebAssign Instructions at
http://people.physics.tamu.edu/etanya/P208/P208.
htm
Textbook: “Don’t Panic: Volume II”, by
William H. Bassichis, 5th Edition
Dedicated
students like it!
Clickers
We will use i>clickers for various kinds of
assessment: pop quizzes, homework quizzes,
in class discussion, etc. You will need to buy
i>clicker and register it for this class at
www.iclicker.com
Grade Policy
Exams 50%
Lab 5%
Quizzes 5%
Final 40%
Grade Policy (cont)
You must pass both the lecture
(3 midterm exams, final exam, homework)
and laboratory parts of the course
in order to pass the course
Grade Policy (cont)
•If your grade on the Final Exam is higher
than your lowest grade on one of the three
exams during the semester, the grade on the
Final will replace that one lowest exam grade
in computing the course grade (it will only
replace one grade in case of two exams having
the same lowest grade).
•The Final Exam grade cannot be used to
replace an exam that has been missed without
an University excused absence. The missed
exam will count as a zero when computing
your final grade.
All Exams are
•Closed book
•No numbers! In general the problems will be
formula solutions with variables
•Problems will be similar to those on
homework and recitation
Homework
You’ll have weekly homework assignments
Every week you ’ ll have hw quiz with one
problem from your assignment.
All quizzes will be given with i>clickers
Check my webpage for hw assignments
Example for Week 1 (Week Jan 19):
Week Jan 19 (due Jan 26): All Chapter 1
problems and exercises
“Due” means that I’ll give you a hw quiz on
that day
Exam schedule
All mid-term exams will be from 7:00 to 9:30 pm
February 17
March 24
April 23
Final
Exam I
Exam II
Exam III
May 8
My Advice to You
• Be proactive!! Get into it and have fun
• Always watch the chapter outline video and read
the book before you come to class
• Be serious about an old rule of thumb: you have to
study 2-3 hours a week outside the class per each
credit hour
• Don’t miss classes (lectures, recitations, labs)
• Solve all problems and exercises after each Chapter
in the book
• Don’t fall into the “I understand the concepts but I
can’t do the problems” trap. It means you haven’t
done enough of the problems in the chapters.
• Every year we have lots of students who really think
they understand but fail during the exams. Don’t let
this happen to you!
I make help sessions before each midterm
exam and the final.
Week in review on Mondays
However,
these
sessions
cannot
substitute for regular class attendance. They
are to give you a good guidance on how to
prepare for the test and to succeed in problem
solving.
Please check my webpage for help sessions
schedule
Learning community:
Wednesday at 8 pm?
A little bit of Mechanics
A couple of very important concepts:
____
W
x2 y 2
x2 y 2
x1 y1
x1 y1
total
F
x dx
W W
total
F
y dy
conservative
W
mV
2
final
2
non conservative
2
mVinitial
2
W
W
conservative
conservative
does NOT depend on path!
[U (r2 ) U (r1 )]
U
U
Fx
; Fy
x
y
W W conservative W nonconservative
2
2
mV
mV
2
1
[U (r2 ) U (r1 )] W nonconservative
2
2
W
non conservative
2
2
mV2
mV1
U (r2 )
U (r1 )
2
2
W
non conservative
If
W
2
2
2
1
mV
mV
U (r2 )
U (r1 )
2
2
non conservative
0,
2
2
2
1
mV
mV
U (r2 )
U (r1 )
2
2
Mechanical energy is conserved!
We can find Gravitational Potential Energy
U (r , )
U (r , )
Fr
; F
r
r
m1m2
Fg G 2 ir
r
m1m2
m1m2
U (r ) G 2 dr G
Const
r
r
U () Const 0
m1m2
U (r ) G
r
i
Fr
ir
Consider now a different type of a force…..
Consider a force like gravitation which varies as
1
r2
but 1) billion-billion-billion-billion times stronger;
2) there are two kinds of “matter”: positive and
negative; Like kinds repel and unlike kinds
attract (unlike gravity where there is only
attraction)
+
+
+
_
_
_
Richard P. Feynman
1918-1988
Nobel Prize in Physics, 1965
From long view of the history of mankind – seen from, say,
ten thousand years from now – there can be little doubt
that the most significant event of the 19th century will be
judged as Maxwell’s discovery of the laws of electrodynamics.
The American Civil War will pale into provincial insignificance
in comparison with this important scientific event of the same
decade.
Have a great day!
Hw: All Chapter 1 problems
and exercises
Reading: Chapter 1
0
