Electric Fields

I was reading through section 13.7 and decided that it goes a little further than grade 11 requires. That means that we're at the end of the chapter and need to schedule a test. Given that I'm not back until Monday I'm thinking that the earliest will be Wednesday next week, perhaps Thursday. If you have other ideas or concerns email me before the weekend.

I liked how our 'make your own quiz' project went so I'd like to try it again. This time we'll take a little more time to make it a bit more of a finished product. For today and tomorrow I want you to make sure that your homework is finished...all of it. Then make up some questions for the chapter. We haven't talked about 13.5 at all so read that and we'll review it Monday.

I'd like at least one question for each section. That makes the total seven. I realize that for 13.1 and 13.2 there isn't much to ask about, but if you read the sections there might be something that "sparks" your interest. Be creative. If not, make a question that requires you to know something from those sections. For section 13.3 I'd suggest page 530 Table 13.1. Read about how to use a table of electrostatic strengths and make a question from that. If you're having difficulty try either the internet, email me, or wait until Monday and I'll work with you then.

The other sections should be fairly easy to make some questions on. Use the examples as a guide if you get stuck.

As before, please write up an answer key with solutions on a separate sheet with comments on your process of how to solve them. I'd like these in draft form for Monday, along with your completed homework. Monday we'll trade papers and try out each other's quiz (which is why it's really important to have these in a workable form for Monday).

Did I mention that Monday was the due date for having all of your homework and a working draft of your quiz? Have a great weekend and please be careful on the roads.

Exercise #33: Operations on Radicals

So this post is for those of you away with sports (good luck by the way). While you're away you may be able to keep up by taking a look at The Math Page. It covers everything we're going to discuss while you're away.

my new post

Here is my new post for today. I hope you're getting your homework done early...

Remember about the test on Tuesday.

Ahhh...Monday

Hello everyone.

I'm sorry that I can't be there today but I've listed some videos and files to help you with our new lessons. Please be sure to email me your questions so that I can help you.

Math 9

Pre-Calc 20

Physics 11: You have a study guide for Chapter 4 to work on. We'll go through it tomorrow when I'm back.

Exponent Laws

Today we will start with marking your homework from Friday...

Then watch the video for our new ideas today...

...and complete Extra Practice #4 for tomorrow.

The Sine Law -from Friday

From Friday...



And for today...

Some Physics Reminders

So, by way of text messaging a former student asked for some reminders about "forces and angles" in what I'm assuming is a unit or course in mechanics.

I'm not entirely sure of what exactly you're looking for but I'll take my best guess and you can reply below by leaving a comment about what you still need to know.

Forces are vectors. When you're determining the Net Force on an object you will need to use some trigonometry. Usually I find a good diagram helpful here since you can form a triangle out of the sum of two forces (provided they're not in the same or opposing directions)with the third side being their resultant.

From here you will need either the Sine Law, or the Law of Cosines. You can also use x and y components of the forces if you have more than two.

Explanations of the Sine Law and the Law of Cosines can be found by following the links.

If instead you're working with Inclined Planes (also involving forces and angles) you'll still want to draw a good diagram. With this topic, however, you'll be working with 'right angled trig' or as you may remember from high school the 'SOH CAH TOA' trigonometry.

The other topic I'm thinking you might be working with is Work. Work is the product of Force and displacement. Most questions in grade 12 involve the force and the distance being in the same direction, but if the force is at an angle to the displacement you will also need to include the cosine of the angle between them. The previous link may help.

I apologise for all of the references to wikipedia. On such short notice it's the best I can do. If you can post or email something more specific I could give you more detail. Hope this helped and good luck.