Honors and AP

In general, labs have the general purpose of exploring relationships amongst physical phenomena and the quantities we measure about them. However labs also usually have a specific purpose of demonstrating the correctness of some theory we developed. For examples:

Centripetal force lab was to demonstrate that ac = omega squared x r
components lab was to see if FG// = MG cos theta vertical
The AP lab on standing waves was to have demonstrated that c = sqrt(FT/mu). This was to be done by seeing if sqrt(FT/mu) /lambda = f. We ( should) know that f= 60 Hz, the standard for electric power throughout the US so the slope of the cvs lambda curve should = 60. Any departure from 60 Hz reppresents an error in either measurements of F mu or lamda or a problem with our theory.

Many of you found f from f = sqrt(FT/mu) /lambda and then used that to get c from c =fxlambda. You then compared the c's and found them to be nearly the same.
This is circular reasoning. All you proved was that
(sqrt(FT/mu) / lambda) x lambda = sqrt(FT/mu)

Honors Assignment for Friday

Here is the latest version of the Notes on Magnetics. For tomorrow read them with special attention to the sections on electromagnetic induction and then try the two examples at the end.

http://h1.ripway.com/DrCherdack/Notes%20on%20magneticsR6.doc

AP Schedule for Unit 11 Electric Potential

Here is the material you need for this topic. Notes on Electrostatics are provided in the Unit 10 post.
http://h1.ripway.com/DrCherdack/APUnit11EPotSched%2009.doc

http://h1.ripway.com/DrCherdack/NotesElectrostatic3-08r1.doc

http://h1.ripway.com/DrCherdack/Unit11Worksheet1.doc

http://h1.ripway.com/DrCherdack/Unit11worksheet2onCapacitors.doc

http://h1.ripway.com/DrCherdack/Notes%20on%20Currents.doc

Honors Notes on Magnetic Fields and Transport

Here is a first draft on the subject. A more complete set will be developed soon.

http://h1.ripway.com/DrCherdack/NotesMagFldsandTransprtPrt1%20.doc

Honors Homework Review

Honors homework review sessions will be on the first two Tuesdays and the last two Wednesdays of each month, starting tomorrow. Room 506 2:35.

Urgent AP Warning

Well maybe urgent is a bit over the top but:
Despite what the schedule says plan on the Unit 10 Quiz on Thursday!

Honors Assignments

Here is the schedule for the unit we have been working on: Currents and Magnetics

http://h1.ripway.com/DrCherdack/HnrUnit8Currmagsch09.doc

http://h1.ripway.com/DrCherdack/Currents%20Worksheet%202.doc

http://h1.ripway.com/DrCherdack/MagneticsWorksheetM2.doc

Topics in Physics

Remember to read through part 5 on Cosmology almost w/o General Relativity. Plan on a quiz!

AP Labs

AP Section 4 I need all your wave labs ( the giant slinky lab) back again. Please bring them Tuesday.

Honors Students

Section 3 will do a lab on magnetic fields and currents. Section 2 will review the test and then resume our work on the lab calculations.

All students: Great Lecture on Magnets and Superconductors

Here is an opportunity to attend a lecture by one of the leading physicists dealing with superconductivity and magnetism. Saturday, March 7, 2PM at Rutgers. We usually have a good turnout for these lectures. They are geared to the intelligent non-scientist and many Ridge students ( even semi normal ones) have attended and enjoyed them in the past.

http://h1.ripway.com/DrCherdack/irons%20lect%2009.pdf

It would make lots of sense for the magnet groups to attend.

AP Waves Quiz

The quiz will focus on standing waves, resonance, loudness and intensity, beats, and Doppler shift.

Hope this helps you focus your studying.

Remember group reports are due Tuesday and it is last chance to hand in any Unit 9 homework for any credit.

Unit 10 Electrostatics

We will now study the forces between charged objects. We will begin with the study of the force created by stationary charges.

http://h1.ripway.com/DrCherdack/APUnit10ElectStSched09.doc

http://h1.ripway.com/DrCherdack/NotesElectrostatic2-08.doc

http://h1.ripway.com/DrCherdack/Unit10Worksheet1.doc

http://h1.ripway.com/DrCherdack/Unit10Worksheet2.doc

http://h1.ripway.com/DrCherdack/Unit10Worksheet3.doc

http://h1.ripway.com/DrCherdack/UnitAP10ESproblemsheet.doc

Honors Assignments

For Monday: read notes on currents and notes on derivations. Do currents worksheet 1.  For Tuesday Read Notes on Magnetics Rev.5 ( this a new and improved version) and do magnetics worksheetM.

http://h1.ripway.com/DrCherdack/Notes%20on%20Currents.doc

http://h1.ripway.com/DrCherdack/Deriva%20of%20Conductance.doc
http://h1.ripway.com/DrCherdack/Currents%20Worksheet%201.doc

http://h1.ripway.com/DrCherdack/Notes%20on%20magneticsR5.doc

http://h1.ripway.com/DrCherdack/Magnetics%20Worksheet%20M.doc