Physics 11

Notes and examples for the component method of vector addition are here.

Some practice vector problems here.

Room 6 (yesterday the 9th)

PHYSICS 12: Today we took a long look at Monday's homework and worked through many examples. Lenz's Law can be straight forward with some practice. We touched on the relationship between wrappings on transformers and I asked that you complete #21-29 from 16.4. We'll discuss those tomorrow, have a little quiz, and get ready for our Chapter 16 test on Friday.



TMATH 9: We marked 2.2, and postponed 2.3 until next time. I also had a new handout for you (an extra copy is here if you need it). We'll be quizzing expressions and like terms beginning on Friday.

PRE-CALC 10: We spent most of our time today looking back at lesson 2 from Module 6. We had our quiz 6.1, discussed questions from 6.2, and briefly looked at 7.2. Between reviewing Module 6 and continuing to move through Module 7 we're all very busy. Please remember that I'm here at noon if you need some help keeping up. Please complete a study guide for lesson #3 for tomorrow.

PHYSICS 11: Today I had you trade your completed study questions with a partner and answer each other's questions. As we quickly found out, it can be a little hard to make questions up and have someone else get the same answer we did. Tomorrow we'll continue our work with this and when we've finished, we'll have a quiz for marks.

Today in Room 6

As I've already mentioned much our work will be to finish the semester, but also to prepare for the final. Regular study and completion of homework will be crucial in the remaining three weeks.

PHYSICS 12: Although we had no class today due to your ELA exam some of you came in to discuss how to complete questions #16, 17, & 18. Thank you for using your time as well as you did. Tomorrow we'll push further into Chapter 16 covering sections 3 & 4. If you can, give it a read before morning and we'll make some notes then.

TRANS MATH 9: Today's class reviewed how to evaluate expressions and the concept of variables, constant terms, and like terms. As I mentioned in the notes please complete your handout for next class.

PRE-CALC 10: In today's class we introduced the idea of relations and started our work in Module 7. Please complete your study notes for lesson 2 of Module 6, and the assignment for lesson 1 of Module 7.

PHYSICS 11: We continued work with Coulomb's Law and reviewed some algebra as we rearranged our new formula. After taking up questions #46 and 49 I gave you a new assignment. You need to make up six questions involving Coulomb's Law. Make one question for each variable (F, r, q1, & q2), one question involving ratios (like #46), and the last question needs to involve a neutral third object (like #49). On the back of your question page be sure to include your answers.

Mathematical Relations?

Today we begin Module 7 by looking at 'relations'. I thought I'd start by taking an example from Wikipedia to get you thinking about how things can be 'related'.

Consider the relationship, involving three roles that people might play, expressed in a statement of the form "X thinks that Y likes Z ". The facts of a concrete situation could be organized in a Table like the following:

An informal example of relations

Person X Thinks Person Y Likes Person Z

Alice	Bob	Denise
Charles	Alice	Bob
Charles	Charles	Alice
Denise	Denise	Denise

Each row of the Table records a fact or makes an assertion of the form "X thinks that Y likes Z ". For instance, the first row says, in effect, "Alice thinks that Bob likes Denise". The Table represents a relation S over the set P of people under discussion:
P = {Alice, Bob, Charles, Denise}.
The data of the Table are equivalent to the following set of ordered triples:
S = {(Alice, Bob, Denise), (Charles, Alice, Bob), (Charles, Charles, Alice), (Denise, Denise, Denise)}.

Now for some notes...

Evaluating Expressions

Here are some short notes about how to complete your worksheet labeled 2.2. If you refer to your notes from before Christmas you will also likely be able to begin work on 2.3. We'll have a review of those notes next class. Please have 2.2, the puzzle, and the fractions review complete for next time.

Some Study Tips...

After some discussion of our respective holidays I noticed that many of your questions and concerns today were around exams. Admittedly so were some of mine. With only three weeks remaining in the semester I would advise all of my students to begin reviewing some of the material covered early in the semester. By doing this sooner rather than later it will allow us better focus our course review as the semester draws to a close.

I'd also like to encourage you to post questions you have on the blog (any article will do, I get an email regardless). This will allow me to answer your specific questions and avoids the rush in the last week. An added bonus is that when I post an explanation it'll be there for as long as you need it. One last suggestion is to pick questions to try that you think I'd include one test or exam. If you need ideas help , or extra questions please see me.

Happy New Year!

I thought that before I start posting review assignments and study guides for our inevitable 'end of semester' rush I thought I'd take a moment and wish everyone a Happy New Year.

I'd like to thank both my former and current students for their holiday wishes and for the 'new dots' on the map from Scotland! If you've taken a moment to notice the Clustermap, the blog has broken the 1000 visitors mark and we continue to gain visitors from all continents. Thank you to all who have visited. What started out as an 'electronic bulletin board' for my classes, has grown into something slightly more and has allowed me to develop many skills. Delivering mathematical content over the internet has been a challenge I continue to enjoy.

As the new year unfolds may your hopes become goals, and your goals become accomplishments.