We will look at the latest batch of Physics in the
We will then go over 25.3 and 25.4, Faradays Law,
Lenzs Law and Eddy currents.
Why do the
throwers hold their
arms up high to
Exam 2 (2013)
You may skip 10 points of the exam. Write skip next to the 10 points you do not want me to
grade. If you do not tell me which problems to skip, I will grade all of them and scale your
grade to 60 points. Do NOT subdivide problems if t
Ch 22 Problem Day
Do two of problems 1 3 and two of problems A C.
1) You have a summer job in the University ecology lab. Your supervisor asks you to
duplicate an electromagnet that she has borrowed. She tells you that this electromagnet is
made by wrappi
We will continue our discussion of electrical power.
We will then begin studying circuits in more detail (Ch 23).
We will apply Kirchoffs junction law and loop law (V = 0) to
We will study series and parallel circuits.
Ch 22 Problem D
When a bow is pulled across the
violin strings (and no fingers are
pressed on the fingerboard) each
string plays a different note. Why?
The 4 strings play G, D, A and E with
no fingers down. This picture is
taken when the A string is shortened
We will begin the study of moving charges, i.e. circuits. (Ch 20
and 21 Electrostatics, Ch 22 and 23 Electrodynamics)
We will discuss current and Kirchoffs Junction Law.
We will discuss batteries and voltage differences which cause
current, I, to
We will find Req for parallel circuits.
We will discuss measuring voltage and current in more detail
than we did in lab.
We will then analyze circuits which have both parallel and
We will find Ceq for circuits.
A three way lig
We will finish discussing Ceq.
We will discuss RC circuits.
We will hopefully have time to discuss the human nervous
Ch 23 Problem Day is Monday
We will begin Ch 24 with a lecture and lab on Tuesday, thus
there are reading questions due
Bethany - 17
Brock - 157
Sarah H - 3
Nodia - 8
Kaitlin R 19
Katelin A - 11 Julia - 10
Brian - 11
Miranda - 10
Ashley - 4
Matt - 6
Logan - 14
Jessica - 2
Jolene - 14
Joel - 4
Anna - 8
Alan - 18
Chris - 3
Zach - 13
Maria - 16
Nate - 16
Radio waves simulation
A plane electromagnetic wave has electric and
magnetic fields at all points in the plane as noted
below. With the fields oriented as shown, the wave
into the plane of the paper.
out of the plane
We will do two examples of instruments which use the
magnetic force on a charged particle to operate.
We will then look at the magnetic force on a current
We then begin discussing induced currents and the
Ch 24 Problem
We will continue discussing the magnetic fields of
current carrying wires.
This will lead to a discussion of the interaction
between two wires carrying currents and between a
current and a moving charged particle.
Exam 2 is Friday from 12:55 to 1:5
Please keep the compass far away from the
magnets (on the opposite end of the table).
See how the magnet interacts with different objects.
Answer the questions in Part 1 of Magnetism
Lecture and Lab.
Fall Class: BIOL 303 / PHYS 303
What types of energy
do the two cars have?
(The top car is
stationary while the
bottom one is moving)
Why can she float?
How do you think noise
cancelling ear phones
What type of
mirrors are shown to
Can you draw the
Why is t
2013 Exam 1
You may skip 10 points of the exam. Write skip next to the 10 points you do not want me to grade. lf you
do not tell me which problems to skip, l will grade all of them and scale your grade to 60 points.
On my honor, l pledge
2013 Exam 1
You may skip 10 points of the exam. Write skip next to the 10 points you do not want me to grade. If you
do not tell me which problems to skip, I will grade all of them and scale your grade to 60 points.
We will look at the problem of seeing your entire body in of
the mirror again.
We will further study total internal reflection (t.i.r.)
We will then look at the bending of rays as they travel through
lenses and reflect off of spherical mirrors. W
We will begin looking at the interaction of light with objects
much larger than the wavelength of light. (for visible light,
objects > mm)
We will look at the basic properties of rays and then apply
them to reflection off of surfaces and refractio