Homework II is now out. It didn't show up last night due to an error on my part (the "first visible" date was set incorrectly).
This homework set covers Chapter 16 of Serway & Faughn, and is once again 10 (equally weighted) questions. Due date is Fri 26 Jan 2007 at 11pm.
There will be recitation time on Fri 26 Jan devoted to homework question.
Webassign login
In today's class we will investigate charge distributions and electric forces using online simulation "applets." You can find the applet here.
The password and username to access these applets will be given in class.
Today's lab is also paperless - all instructions are given below (or in class), your lab report will be electronic-only and turned in by email.
---------------------
Exercise I
1. Open up "Exploration 22.2: Explore the Effect of Multiple Charges."
2. Following the on-screen instructions.
3. Follow the procedures and answer the questions at the bottom of the page. Type your responses into, e.g., Word or Notepad as you are doing this, your lab report will be entirely electronic. Be sure to include all group member's names at the top of this document. Use any program you wish, so long as you are able to include images (see below).
4. When you have finished question "g", take a screen shot (snapshot, picture) of your configuration (hint: four charges works well). Instructions on how to do this are below. Put this screen shot into your lab report document. If you use Microsoft Word, this is easily accomplished, ask if you are unsure.
5. Finish all the questions for this exercise. Your lab report document should contain all of your answers, clearly marked by exercise and question number, all group member's names, and your screen shot.
6. Keep your document open for the second exercise ...
Exercise II
After you have finished the first exercise:
1. Go back to the table of contents (the link above).
2. Open up "Exploration 22.6: Run Coulomb's Gauntlet."
3. Follow the on-screen instructions.
4. Follow the procedures and answer the two questions at the bottom of the page. Finding a working configuration of charges is difficult, but it can be done with only three additional charges, if you think carefully before you start.
5. Record these responses in the same document as Exercise I above.
6. When you have finished question "g", take a screen shot of your best configuration. You will not be penalized if you could not find a working solution, only if you do not try.
Finishing Up
1. Your lab report document should contain clearly marked, well-reasoned, and (reasonably) grammatically correct responses to all of the questions for both exercies.
2. Your lab report should include 2 screenshots of charge configurations, which should be embedded within your electronic lab report.
3. All group members' names should be included at the top of the document.
4. When you are satisfied with your report, email the resulting document to Dr. LeClair. Pkease include `PH102' in the subject somewhere.
Once again this semseter, we are having all of the PH 10x TA's pool their office hours. This means that any TA for any 100-level physics course is available some time during the week to help you -- you can see which ever TA has the most convenient office hours for you.
These common office hours are held in 215 Gallalee. You can find the current schedule here, or in the "links" sidebar on the right side of this page.
Since I had several questions about today's webassign exercises, I quickly typed up some hints on numbers 1 and 3:
Exercise hints [PDF]
They are due at 11pm, hope this helps.
(Update 02:04) When entering numbers in scientific notation into Webassign, do so like this:
1.2e-3
or this:
1.2E-3
Not like this:
1.2*10^-3
The first two are accepted, the last one is not.
If you would like to subscribe to the course calendar, but do not have a Google account, send me an email or leave a comment. I have plenty of invites left.
This will give you a Google email account as well ("gmail"), which can be handy.
This offer is open only to enrolled students / TAs / etc.
A first draft of the Ch. 15 lecture notes are now online.
Chapter 15 alone [PDF]
Everything to date [PDF]
Or, follow the link on the right sidebar for the notes listing or cumulative document.
Right now, these notes only cover 15.1-15.5, the material I hope to get through on Tues 16 Jan. By week's end, they should encompass the whole chapter. Remember: these are my notes, not yours, provided for your reference ... They are not a substitute for, e.g., going to lecture and/or taking your own notes. YMMV.
For the record: sometimes notes will be available before lecture, and sometimes they will be available after lecture. Certain sections may never appear entirely.
C'est la vie.
