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Lectures
Lecture 6: iq04
1. E real? Information on the change of E
travels at speed of light
2. Atoms, insulators and conductors. Separation energy.
3. Polarization of insulator:
o
Polarization=Polarizability
x Electric Field
o
Force between Q and a neutral atom
4.
Polarization of conductor
o
Migration of electrons: Drude
model, drift velocity
o
How conductor and Insulator interact with
an applied field?
5. Force Q exerts on a wire segment (A is
middle of segment). Read p604-605.
o
F on dipole due Q= -Q[2kp/r3]. p=qL.
o
Determine q from the condition: Eat Adue_dipole + Eat Adue_Q=0.
Announcements:
1. TA – sessions for [57027 T6-7p] and [57029
Th6-7p] are not available.
o
Students
with 57027 or 57029 unique numbers must select one out of the 10 sessions
listed on the TA/LA homepage to attend. Please email contact
the TA prior to joining the session.
o
Need
~16 students move from [57030, JES A209A] to [57028, PAR 208], see Head TA Josh
Hebert.
o
Book
keeping: If a
student plans to attend the lecture of this class on a regular basis, yet not
register in this class, the student needs to switch his/her enrollment to this class. There is no need to change the
TA session attendance. However homework grade needs to move to this section.
2. Clicker related issues
o
During
the semester there is no mechanism to adjustment your iq-scores.
There will be 4 drops to compensate the 0-iq-scores due to legitimate excuses. Use
your drops sparingly.
o
If
you have enrolled in the class late, make sure record the starting date you
attend this class. We will adjust your end-of-the-semester iq-score
due to your late enrollment.
3. Added
resources for this course. (See “lecture related” in the menu
)
o
Lecture
slides/handouts
o
HW-support
problems
4. I
encourage you to join the face book. Our
group in facebook is: Phy
303L M&I, Spring12
5. Contact
your instructor through email and office hours.
o
Email
me your questions on homework, lecture, clicker questions and textbook
materials etc. (subject line should have: 303L-MI)
o
See
me in person: After the lecture, or office hours: MWF 9 to 10pm. Often I will
be available MWF from 10-12noon. Call me at 340-0292(cell) before you come.
Other time by appointment.