Study for the exam carefully. Watch those multiple guess questions-they can be tricky.
Have a great summer & all the best to you in whatever you pursue.
Monday, June 16, 2008
Thursday, June 12, 2008
thursday's post
So this is a split scribe cause I believe that someone else is also scribbing. We did 2 worksheet, heres the answers for 37-2.
After we did review chapter 26.
Wednesday, June 11, 2008
WEDNESDAY JUNE 11, 2008
So, today in class we started off our very productive class by going over the EFFECTS OF CHANGING MAGNETIC FIELDS : INDUCED EMF. If you need to fill in the blanks, feel free to ask anyone for them =).
We also learned about Lenz's Law which basically has to do with electromagnetic induction. We got a sheet to help us figure out how this particular law works. We can use the RHR to help us determine which way the current(s) flow. For example:
Using the RHR, our thumb acts as the "arrow" and our fingers are "rolling upwards" therefore, the currents here are going up.
We also learned about TRANSFORMERS. There are terms that are associated with transformers. These are : STEP-UP TRANSFORMER and STEP-DOWN TRANSFORMER. In a step-up transformer, the primary voltage is less than the secondary voltage, and the current in the primary circuit is greater than the current int he secondary. In a step-down transformer, the primary voltage is greater than the secondary voltage and the cuurent in the primary circuit is less than the current in the secondary circuit.
There is a ratio that goes along with transformers and it looks like this:
We also got a sheet where it is also fill-in-the-blanks and a review sheet which we will go over tomorrow.
PLEASE DO NOT FORGET : TEST ON FRIDAY !!!
[ THE LAST PHYSICS TEST OF THE YEAR LADIES AND GENTLEMEN ]
hello
well im sure the 5th pd class was just as exciting as the 2nd period but man there class is alot more talkative. lol. And how come you talk the 5th pd class on the blog....
Tuesday, June 10, 2008
tuesdays post
So its me again, today in class we looked over a new worksheet and learned a few new equations. Then went on to do 37-1 but not going to show you those answers as the teacher had it done in class. But I will do the 7 questions on electromagnetic induction in a quick fast way.
well that is again if you want anymore detail let me know any I will see what I can do. I need to do at least one more so if no-one else calls tomorrow I would like to do it again. Thanks :)
mondays late post
For Monday all that I can remember is that we reviewed the 2 test given back :) I did pretty good so I was happy. Unfortunately all the answers are written out so theres no real work to be
done but did add a comment or 2. :)
If anyone has any questions concerning the answers let me know and I will try to go through it in more detail.
Monday, June 9, 2008
Sunday, June 8, 2008
fridays post
Hey sorry for scribing late but this was the first time I was able to this weekend. All we did in class was the practise sheet ,Compound circuits, and we all teamed up in did an extra sheet, power in electric circuits, on the whiteboards. So here's the work.
We also did that extra sheet but unfortunately I'm not able to post all that. But besides the point here is what I did, pretty sure its correct but might want to make sure monday. I took total current going into the parallel circuit thats part of a series circuit and times it by total resistance of that parallel circuit giving me voltage. Then took that voltage and divided it by each individual resistance to find current of each resistor. Anyhow thats all and I would like to ask to scribe again monday.
Final words: I R SRY :)
We also did that extra sheet but unfortunately I'm not able to post all that. But besides the point here is what I did, pretty sure its correct but might want to make sure monday. I took total current going into the parallel circuit thats part of a series circuit and times it by total resistance of that parallel circuit giving me voltage. Then took that voltage and divided it by each individual resistance to find current of each resistor. Anyhow thats all and I would like to ask to scribe again monday.
Final words: I R SRY :)
Friday, June 6, 2008
Thursday, June 5, 2008
THURSDAY JUNE 5, 2008 !
So today in class we did a few things .. THE END just kidding :)
The first thing we did was the last couple of pages for CHAPTER 35 ELECTTRIC CIRCUITS. I'm too shy to tell help you fill in the blanks, so let's move on. The next thing we did was go over SIMPLE CIRCUITS on the white boards. There's alot ot things going on, so if you need the answers ask anyone that was present =).
Here's a little bit of cheat sheet if you are ever doubtful of what belongs to which and who belongs to what and so on so forth.
The first thing we did was the last couple of pages for CHAPTER 35 ELECTTRIC CIRCUITS. I'm too shy to tell help you fill in the blanks, so let's move on. The next thing we did was go over SIMPLE CIRCUITS on the white boards. There's alot ot things going on, so if you need the answers ask anyone that was present =).
Here's a little bit of cheat sheet if you are ever doubtful of what belongs to which and who belongs to what and so on so forth.
We also got 2 sheets that deal with COMPOUND CIRCUITS. There are 5 steps to allow us to answer these problems, and they are stated on the first sheet.
PS - I'm not actually shy, I just think you can ask your fellow classmates for the fill-in-the-blanks =)
Wednesday, June 4, 2008
Wednesday, June 4
ANSWERS!!
Grade 12 Electric Circuits: Resistivity Problems
1) A = ρL/R
= (1.7 x 10-8)(20) / (0.10)
= 3.4 x 10-6 m2
A = πr2
r = √(A/π)
= √(3.4 x 10-6 / π) x 2
d = 2.1 x 10-3 m
2) L = RA/ρ
= (1.5)(2.5 x 10-7) / (100 x 10-8)
= 0.38 m
3) ρ = RA/L
= (0.04)(2.0 x 10-6 / (5.0)
= 1.6 x 10-8 Ωm
4) L = RA/ρ
= (3.0)(1.5 x 10-6) / (100 x 10-8)
= 4.5 m
5) A = ρL/R
= (5.5 x 10-8)(0.2) / (0.10)
= 1.1 x 10-7 m2
A = πr2
r = √(A/π)
= √(1.1 x 10-7 m2 / π) x 2
d = 3.7 x 10-4 m
Today we corrected Chapter 23: Study Guide Simple Circuits. We were handed Chapter 34: Electric Current (the “fun” thing) and corrected the first page. Lastly, we were given worksheets called Series and Parallel Circuits, and Simple Circuits.
Grade 12 Electric Circuits: Resistivity Problems
1) A = ρL/R
= (1.7 x 10-8)(20) / (0.10)
= 3.4 x 10-6 m2
A = πr2
r = √(A/π)
= √(3.4 x 10-6 / π) x 2
d = 2.1 x 10-3 m
2) L = RA/ρ
= (1.5)(2.5 x 10-7) / (100 x 10-8)
= 0.38 m
3) ρ = RA/L
= (0.04)(2.0 x 10-6 / (5.0)
= 1.6 x 10-8 Ωm
4) L = RA/ρ
= (3.0)(1.5 x 10-6) / (100 x 10-8)
= 4.5 m
5) A = ρL/R
= (5.5 x 10-8)(0.2) / (0.10)
= 1.1 x 10-7 m2
A = πr2
r = √(A/π)
= √(1.1 x 10-7 m2 / π) x 2
d = 3.7 x 10-4 m
Today we corrected Chapter 23: Study Guide Simple Circuits. We were handed Chapter 34: Electric Current (the “fun” thing) and corrected the first page. Lastly, we were given worksheets called Series and Parallel Circuits, and Simple Circuits.
Wednesday, May 28, 2008
Tuesday, May 27, 2008
Tuesday, May 27
Today we corrected the Moving Charges Worksheet. I'm feeling so generous so here's the answers:
4) a) Fe and Fg
b) Positive charge
c) Fe = Fg
mg = Eq
q = mg/E = (3.2 x 10-15)(9.8) / (19600)
= 1.6 x 10-18 C
5) B = F/IL
= (0.40) / (20.0)(0.15)
= 0.13 T
6) B = F/IL
= (6.0 x 10-5) / (1.5)(0.50)
= 8.0 x 10-5 T
7) F = BIL
= (5.5 x 10-5)(20.0)(10.0)
= 1.1 x 10-2 N
8) B = F/qv
= (5.6 x 10-13) / (1.6 x 10-19)(2.1 x 105)
= 16.7 T [left]
9) F = Bqv
= (1.2)(1.6 x 10-19)(8.6 x 104)
= 1.65 x 10-14 N [right]
10) B = F/qv
= (4.0 x 10-6) / (1.6 x 10-19)(5.0 x 105)
= 5.0 x 107 T [into the page]
11) q = F/Bv
= (4.8 x 10-14) / (5.0 x 10-2)(2.0 x 106)
= 4.8 x 10-19 C
12)
a) F = Bqv
= (0.080)(1.6 x 10-19)(4.0 x 106)
= 5.12 x 10-14 N
b) R = mv2/F
= (9.11 x 10-31)(4.0 x 106)2 / (5.12 x 10-14)
= 2.84 x 10-4 m
13) v = BqR/m
= (5.0 x 10-4)(1.6 x 10-19)(0.50) / (9.11 x 10-31)
= 4.4 x 107 m/s
We also picked up a Review sheet and a worksheet named "The Path of a Charged Particle in a Magnetic Field." Test on Thursday !
4) a) Fe and Fg
b) Positive charge
c) Fe = Fg
mg = Eq
q = mg/E = (3.2 x 10-15)(9.8) / (19600)
= 1.6 x 10-18 C
5) B = F/IL
= (0.40) / (20.0)(0.15)
= 0.13 T
6) B = F/IL
= (6.0 x 10-5) / (1.5)(0.50)
= 8.0 x 10-5 T
7) F = BIL
= (5.5 x 10-5)(20.0)(10.0)
= 1.1 x 10-2 N
8) B = F/qv
= (5.6 x 10-13) / (1.6 x 10-19)(2.1 x 105)
= 16.7 T [left]
9) F = Bqv
= (1.2)(1.6 x 10-19)(8.6 x 104)
= 1.65 x 10-14 N [right]
10) B = F/qv
= (4.0 x 10-6) / (1.6 x 10-19)(5.0 x 105)
= 5.0 x 107 T [into the page]
11) q = F/Bv
= (4.8 x 10-14) / (5.0 x 10-2)(2.0 x 106)
= 4.8 x 10-19 C
12)
a) F = Bqv
= (0.080)(1.6 x 10-19)(4.0 x 106)
= 5.12 x 10-14 N
b) R = mv2/F
= (9.11 x 10-31)(4.0 x 106)2 / (5.12 x 10-14)
= 2.84 x 10-4 m
13) v = BqR/m
= (5.0 x 10-4)(1.6 x 10-19)(0.50) / (9.11 x 10-31)
= 4.4 x 107 m/s
We also picked up a Review sheet and a worksheet named "The Path of a Charged Particle in a Magnetic Field." Test on Thursday !
Wednesday, May 21, 2008
Today we learned that in order for an object to move from one distance to another distance above the earth's surface, it needs a certain amount of force which increases its gravitational potential energy (work) to raise a mass from d1 to d2.
Electric potential energy is the same thing as when you place a positive charge between parallel plates. The charge is attracted to the negative plate but in order for the plate to move further away a force must be applied upward. Making a second height other than the first. The area of the shaded region between the two heights reps the increase in electric potential energy.
Calculating Electric potential energy.
PE(1)/(force*height1)=(Force)(distance of charge from negative plate)
=?J (amount of electric potential energy the charge has from the -ve plate)
Now you calculate the PE of charge at a second height
PE(2)=(Force)(second distance of charge from negative plate)
=?J(amount of electric potential energy the charge has from the -ve plate at a second distance)
Now to find the total PE b/w the two positions YOU SUBTRACT PE(1) from PE(2). Now the answer doesnt always have to be positive. Only if point B is further away from the negative plate. If point B is closer than it has a loss of PE.
This can be found from the shaded region of the two distances by multiplying the force of both(only if the same force is applied) by the two distances.
So PE is the work that is done in order to move a charge from one place to another.
ELECTRIC POTENTIAL
Electric potential and PE are very different. Electric potential is the potential energy that a charge has at a given point. Which can be found by this equation ( energy,J)/(charge,C)
The quantity is called a volt.
Potential Difference
To calculate the potential difference of a charge once it has moved to another point you must calculate the Electric potential of the first point V(1)=( energy,J)/(charge,C) and the same for the second point V(2)=( energy,J)/(charge,C). Doing the same thing as in Electric potential energy the Voltage of the first point from the voltage of the second point.
DeltaV=V(2)-V(1)
Now the amount of voltage that has changed in the positions of the charge is EQUAL to the amount of work needed to move the charge from one position to the next.
Now we were given a fun worksheet in which we went over in class and a second problem solving sheet which to be finished by tomorrow.
Electric potential energy is the same thing as when you place a positive charge between parallel plates. The charge is attracted to the negative plate but in order for the plate to move further away a force must be applied upward. Making a second height other than the first. The area of the shaded region between the two heights reps the increase in electric potential energy.
Calculating Electric potential energy.
PE(1)/(force*height1)=(Force)(distance of charge from negative plate)
=?J (amount of electric potential energy the charge has from the -ve plate)
Now you calculate the PE of charge at a second height
PE(2)=(Force)(second distance of charge from negative plate)
=?J(amount of electric potential energy the charge has from the -ve plate at a second distance)
Now to find the total PE b/w the two positions YOU SUBTRACT PE(1) from PE(2). Now the answer doesnt always have to be positive. Only if point B is further away from the negative plate. If point B is closer than it has a loss of PE.
This can be found from the shaded region of the two distances by multiplying the force of both(only if the same force is applied) by the two distances.
So PE is the work that is done in order to move a charge from one place to another.
ELECTRIC POTENTIAL
Electric potential and PE are very different. Electric potential is the potential energy that a charge has at a given point. Which can be found by this equation ( energy,J)/(charge,C)
The quantity is called a volt.
Potential Difference
To calculate the potential difference of a charge once it has moved to another point you must calculate the Electric potential of the first point V(1)=( energy,J)/(charge,C) and the same for the second point V(2)=( energy,J)/(charge,C). Doing the same thing as in Electric potential energy the Voltage of the first point from the voltage of the second point.
DeltaV=V(2)-V(1)
Now the amount of voltage that has changed in the positions of the charge is EQUAL to the amount of work needed to move the charge from one position to the next.
Now we were given a fun worksheet in which we went over in class and a second problem solving sheet which to be finished by tomorrow.
Friday, May 16, 2008
Thursday, May 15, 2008
Thursday, May 15, 2008
Today we read about Coulomb's Law in the green textbook and worked on a few practice questions. We also handed in several textbook questions for marks, using Coulomb's Law to calculate the force between two charges. This took up the majority of the period and the class packed up waaay too early today!
May 15, 2008
It seems to me that my fellow physics friends forgot to scribe again so I'll do a good deed and grab myself some BONUS marks. First, we started our new unit about electric and magnetic fields. We described the similarities and difference about Newtons gravitational law and coulombs law. Second, we had to read pages 415-418 on the green book. Also we were assigned to hand in some questions which is due for tomorrow.
Monday - May 12, 2008
So I'll also be doing the scribe for May 12.
On Monday, we went over the questions in the green textbook; 17, 20, 21, 22, and 23 on the board. It took a while and so afterwards, near the end of class, we watched a short video about space.
On Monday, we went over the questions in the green textbook; 17, 20, 21, 22, and 23 on the board. It took a while and so afterwards, near the end of class, we watched a short video about space.
Friday - May 9, 2008
So on this day we also went over some worksheets and were assigned the questions 17, 20, 21, 22, and 23 in the green textbook on page 172. We also got to see one presentation today from Ethan which was about Mars Exploration. Good job by the way Ethan.
Thursday - May 8, 2008
So I know this was a week ago but no one has scribed for this date so I thought I would do it. Since it was almost a week ago I don't remember much so this scribe will be pretty short.
All right, so on May 8 we watched a film and had to make 5 points about it which we handed in afterwards. We also corrected some sheets and that was it.
All right, so on May 8 we watched a film and had to make 5 points about it which we handed in afterwards. We also corrected some sheets and that was it.
Wednesday - May 14, 2008
I don't know if someone else was supposed to do this so I will. So today we had a test on Space Exploration. It took the entire period and that was basically it !
Tuesday, May 13, 2008
May 13, 2008 AKA Judgement Day
Since i think Lauressa forgot to scribe for today`s class, I`m going to pick up the slack and do it. First, we watched a video about weightlessness. It talks about a group of students that conducted an experiment in zero gravity. We then had to write 4 points regarding this video. Second, Ms. K did a mini review on our space exploration unit. The slides are posted on the blog. Lastly, study hard and good luck on the test. Now, Im gonna play games on my computer. Its been a long time since i played due to the fact that i had to study for that evil Ap exam.
Thursday, May 8, 2008
Wednesday May 7, 2008
No class on Tuesday
On Wednesday, Lauressa did a presentation on Jupiter. It took a while before they got it to open but it was worth the wait. Good job Lauressa an a special thanks to Ms. K, Mark, and Sam. After, we corrected the gravitational fields worksheet on the board. The last thing we did was go over the answers for the chapter 8 review.
That's all!
On Wednesday, Lauressa did a presentation on Jupiter. It took a while before they got it to open but it was worth the wait. Good job Lauressa an a special thanks to Ms. K, Mark, and Sam. After, we corrected the gravitational fields worksheet on the board. The last thing we did was go over the answers for the chapter 8 review.
That's all!
Friday MAY 2, 2008
hmmmmm... no one seems to be scribing these days
it looks like someone forgot to scribe for friday so i think i'll do it
Friday was presentation day!
First up was Rizzle and Jenny and they researched Pluto. It seems Pluto is no longer a planet. It's more like a satellite for Neptune and Pluto's name is now a number. Some sad stuff.
Sam and Van's project was space disasters. Their project was very interesting and was really funny. Too bad their video didn't work. Something wrong with the internet (or maybe Mark's computer j/k)
Mark did a presentation on the development of telescopes. He had a lot of great information to share with the class.
Lastly, Lina did a presentation on cosmology. It was great and very informative. Don't worry Lina, you did fine.
That's all the presentations we had time for.
it looks like someone forgot to scribe for friday so i think i'll do it
Friday was presentation day!
First up was Rizzle and Jenny and they researched Pluto. It seems Pluto is no longer a planet. It's more like a satellite for Neptune and Pluto's name is now a number. Some sad stuff.
Sam and Van's project was space disasters. Their project was very interesting and was really funny. Too bad their video didn't work. Something wrong with the internet (or maybe Mark's computer j/k)
Mark did a presentation on the development of telescopes. He had a lot of great information to share with the class.
Lastly, Lina did a presentation on cosmology. It was great and very informative. Don't worry Lina, you did fine.
That's all the presentations we had time for.
Monday, May 5, 2008
Today we...
Had another substitute teacher!!!
The first thing that occurred was that he gave us the answers to the Universal Law of Gravitation worksheet.
Afterwards he gave us a few handouts and assignments.
We got an information sheet called, "Mass of a Central Object and Radius of Motion of a Satellite". According to the sheet itself, we can determine the mass of our sun by knowing the mean radius of orbit and period of motion of our own earth.
From the Green Textbook, we are to do problems number 6, 7, 11, 13, and 18 on page 172.
We also got a review sheet where we have to do questions 1, 2, 3, 5, and 6 only.
That is it, that is all. Remember, no classes tomorrow afternoon. Have fun on your day off and don't forget to do your homework!
The first thing that occurred was that he gave us the answers to the Universal Law of Gravitation worksheet.
Afterwards he gave us a few handouts and assignments.
We got an information sheet called, "Mass of a Central Object and Radius of Motion of a Satellite". According to the sheet itself, we can determine the mass of our sun by knowing the mean radius of orbit and period of motion of our own earth.
From the Green Textbook, we are to do problems number 6, 7, 11, 13, and 18 on page 172.
We also got a review sheet where we have to do questions 1, 2, 3, 5, and 6 only.
That is it, that is all. Remember, no classes tomorrow afternoon. Have fun on your day off and don't forget to do your homework!
Thursday, May 1, 2008
May 01, 2008
Hi fellow physics people. Happy first day of May! I will scribe for today I suppose.
Well that's it! I look forward to seeing the presentations tomorrow.
So the first thing that happpened was to see who finished their presentations. From all the sideway glances and blank stares, you could tell who didn't. However Rosel was the only one who presented today and her project on the development of the telescope was brilliant. Good Job!
Afterwards, we worked on the worksheets that we recieved from the substitute teacher yesterday. Then we went over the four questions on the worksheet, Universal Law of Gravitation. It was pretty straight forward. One thing that I found particularly interesting was the formula derivation to make answering the last question easier. I have illustrated it for people here.
Well that's it! I look forward to seeing the presentations tomorrow.
Wednesday, April 30, 2008
April 30, 2008
YAY! My last scribe post.
Well , today's class we had a substitute teacher again. First thing we did was went over the sheet called the gravitational potential energy questions. After that we had 3 worksheets to grab. Two of those sheets are need to be done by Friday. Also, don't forget your presentations for tomorrow.
Thats it thats all back to some more chess.
Well , today's class we had a substitute teacher again. First thing we did was went over the sheet called the gravitational potential energy questions. After that we had 3 worksheets to grab. Two of those sheets are need to be done by Friday. Also, don't forget your presentations for tomorrow.
Thats it thats all back to some more chess.
Tuesday, April 29, 2008
April 29, 2008
First thing we did was we answered a transparency sheet. Second, we went over the space exploration booklet. Third, we had to answer the worksheet called the gravitational potential energy questions. Lastly, we had a fire drill and the class was dismissed there.
REMINDERS
REMINDERS
- Need to hand in questions 1-5 on page 172 of the green book.
- Our presentations are due this Thursday.
Monday, April 28, 2008
April 28, 2008
Today, Ms. K gave us back our catapult worksheets and inverse square law lab. Also, she showed us a couple of videos regarding our presentations for Thursday (May 1st). The video includes some tips on how to make an effective presentation. Ms. K needed to leave for a department meeting so we had a substitute teacher for the rest of the class. She told us to work on questions 1-5 on page 172 , located at the green booklet. The questions need to be handed in yesterday for MARKS. The rest of the class was devoted on finishing those questions up.
Sunday, April 27, 2008
April 25, 2008
yay my last post!
We had a sub on Friday. He gave us a few minutes to finish up worksheets. After we went over the back page of the chapter 8 study guide. The next thing we corrected was the chapter 12 universal gravitation worksheet. The last thing we did was we went over the chapter 11 gravitational interactions worksheet. Basically that's all we did. Oh, the teacher also assigned questions 1 - 4 (p. 160) and 1 -5 (p. 172) from the green textbook.
That's all!
We had a sub on Friday. He gave us a few minutes to finish up worksheets. After we went over the back page of the chapter 8 study guide. The next thing we corrected was the chapter 12 universal gravitation worksheet. The last thing we did was we went over the chapter 11 gravitational interactions worksheet. Basically that's all we did. Oh, the teacher also assigned questions 1 - 4 (p. 160) and 1 -5 (p. 172) from the green textbook.
That's all!
Thursday, April 24, 2008
April 23, 2008
Okay, so basically we had 2 tasks:
1) do the first page of the chapter 8 study guide
Get information from the green textbook.
2) work on lab
For the lab, we had to draw an ellipse and find the forces from each planet to the star (focus). Please hand it in if you didn't already. From this lab, we learned that:
Planets move fastest when closest to the sun and move slowest when farthest from the sun.
That's all!
Dont forget our project is due on May 1.
1) do the first page of the chapter 8 study guide
Get information from the green textbook.
2) work on lab
For the lab, we had to draw an ellipse and find the forces from each planet to the star (focus). Please hand it in if you didn't already. From this lab, we learned that:
Planets move fastest when closest to the sun and move slowest when farthest from the sun.
That's all!
Dont forget our project is due on May 1.
April 24, 2008
Hi everyone, since I'm taking my break right now from gaming, I decided to do today's scribe post.
The first thing we did was watched a video. The name of it was "Kepler's Three Laws".After watching that and answering the question sheet, we went over the correct answers for that.
Second, we also got our Circular Motion & Work and Energy tests. We then went over the answers with Mrs. K and made sure we had the correct answers.
Third, we went over Chapter 8 Study Guide. We went over the answers with Ms. K.
Fourth, we had a mini worksheet regarding Kepler's law.
Fifth, we got 5 sheets regarding this unit. If you need them just ask Ms. K for your own copy.
That's it, now back to some more gaming.
The first thing we did was watched a video. The name of it was "Kepler's Three Laws".After watching that and answering the question sheet, we went over the correct answers for that.
Second, we also got our Circular Motion & Work and Energy tests. We then went over the answers with Mrs. K and made sure we had the correct answers.
Third, we went over Chapter 8 Study Guide. We went over the answers with Ms. K.
Fourth, we had a mini worksheet regarding Kepler's law.
Fifth, we got 5 sheets regarding this unit. If you need them just ask Ms. K for your own copy.
That's it, now back to some more gaming.
Tuesday, April 22, 2008
April 22, 2008 Tests
Hello everyone! It seems like no one wants to scribe so I'll do it today.
Today we had a test on circular motion and work and energy. It looks like the majority of the class wants a retest. That took the whole period. I wont say too much about the test because some people didn't write it yet.
Okay so after the test, Ms. k handed out the sheet for our next physics project for our new unit, Exploration of Space. We can work individually or in groups of two. Basically we choose a topic listed on the sheet, do some research, then present in class for 5 minutes (You CAN'T JUST READ YOUR PROJECT.) The presentation can be in the form of a webpage, webquest, photo album, video, powerpoint, etc. If you don't have this sheet, you can get one in class tomorrow.
This project is due on Thursday, May 1, 2008.
That's all!
Today we had a test on circular motion and work and energy. It looks like the majority of the class wants a retest. That took the whole period. I wont say too much about the test because some people didn't write it yet.
Okay so after the test, Ms. k handed out the sheet for our next physics project for our new unit, Exploration of Space. We can work individually or in groups of two. Basically we choose a topic listed on the sheet, do some research, then present in class for 5 minutes (You CAN'T JUST READ YOUR PROJECT.) The presentation can be in the form of a webpage, webquest, photo album, video, powerpoint, etc. If you don't have this sheet, you can get one in class tomorrow.
This project is due on Thursday, May 1, 2008.
That's all!
Monday, April 21, 2008
Today we...
had a substitute teacher! Somehow Ms. K just disappeared without a trace. We never even got a review for our test tomorrow, but c'est la vie. haha I think that's correct, don't mind my horrible french.
So what did we do? Not much. I think we all worked on some homework for a certain amount of time during the class.
We were to go over questions from the green book. They were on page 237 and we had to do questions, 1, 3, 6, 9, 10, 12, 14, 21, and 23. I think some of us did it, but we had no answer key to check off of and thus who's to say that we were right?
That was pretty much all that happened during our uneventful class. We have a test tomorrow so I think people should read up on centripetal force and learn how to use the formulas given in the previous post. Hopefully we'll all do well on the test. Good luck everyone!
So what did we do? Not much. I think we all worked on some homework for a certain amount of time during the class.
We were to go over questions from the green book. They were on page 237 and we had to do questions, 1, 3, 6, 9, 10, 12, 14, 21, and 23. I think some of us did it, but we had no answer key to check off of and thus who's to say that we were right?
That was pretty much all that happened during our uneventful class. We have a test tomorrow so I think people should read up on centripetal force and learn how to use the formulas given in the previous post. Hopefully we'll all do well on the test. Good luck everyone!
Thursday April 17
Hello fellow physics people. No one scribed for the class on thursday so I'm taking the time to do it now. Actually it's quite a blur it was afterall, such a long time ago.
So I think we went over a few sheets like the momentum and energy one with Bronco Brown. Then we went oer the study guide about Energy and Work. Then somewhere in there I think we went over questions from the green book. They were on page 213 and we had to do questions 1, 3, 5, 8, 10, 12, 17, 22, and 23.
Some equations to remember are:
Ek = (1/2)mv^2
Ep = mgh
W = fdcos(theta)
Fs = kx
That's all I think. Like I said, it's a blur.
So I think we went over a few sheets like the momentum and energy one with Bronco Brown. Then we went oer the study guide about Energy and Work. Then somewhere in there I think we went over questions from the green book. They were on page 213 and we had to do questions 1, 3, 5, 8, 10, 12, 17, 22, and 23.
Some equations to remember are:
Ek = (1/2)mv^2
Ep = mgh
W = fdcos(theta)
Fs = kx
That's all I think. Like I said, it's a blur.
Friday, April 18, 2008
wednesday, april 16
since no one really finished their labs, we worked on it today. It took longer than expected so that was all we basically got to do.
Tuesday, April 15, 2008
tuesday april 15
Okay so today in class we went over the back page of the chapter 11 study guide. After, we read the last page of the booklet with all the notes. The last thing we did was a lab (Hooke's Law) which is due tomorrow.
for monday, april 14 / 08
Today (i mean yesterday) we went over the first side of the chapter 11 study guide . If you need the answers to the blank spaces, I am pretty sure anyone from class can happily help you with filling them in. We were then assigned to finish the back side of the sheet. We were also supposed to complete Energy and Work worksheet and the Momentum and Energy Worksheet. And that is about it !
Tuesday, April 8, 2008
Monday, April 7
On the first day back from spring break we did a lab on circular motion. We had to attach washers to the end of the string and record the amount of time it took for 30 revolutions/swings. The radius was constant at 0.8 meters and allowed us to calculate velocity. Theeenn we graphed force vs. speed and force vs. speed2. There were some questions to answer in the lab and that was basically Monday's class.
Next to scribe is DUONG!
Next to scribe is DUONG!
Thursday, March 27, 2008
Today...
Hello fellow physics people.
Today in class we watched clips about circular motion and centripetal force. They were interesting to say the least.
For the rest of the class I think most of us were working on our catapult labs and finishing the questions up.
We receieved three worksheets. A practice sheet on acceleration and circular motion, centripetal acceleration, and one sheet introduces something new, frames of reference. So I suppose we should all get it done for the monday after break. Don't forget to work on them!
So as for the next scribe, it will be Jenny because the other day she was complaining that nobody picks her. =)
Today in class we watched clips about circular motion and centripetal force. They were interesting to say the least.
For the rest of the class I think most of us were working on our catapult labs and finishing the questions up.
We receieved three worksheets. A practice sheet on acceleration and circular motion, centripetal acceleration, and one sheet introduces something new, frames of reference. So I suppose we should all get it done for the monday after break. Don't forget to work on them!
So as for the next scribe, it will be Jenny because the other day she was complaining that nobody picks her. =)
Wednesday, March 26, 2008
Catapults!
Today was the due date for our catapults. It's nice to see that everyone's catapults were so unique. We tested our catapults and filled in the pink sheet for the whole class. Remember the pink sheet is due on Friday.
Well that's what happened today.
The next scribe is LINA!
Well that's what happened today.
The next scribe is LINA!
Tuesday, March 25, 2008
Tuesday, March 25
Well Well Well. Today was just so exciting i dont know quite where to begin. At the beginning of class we went over two sheets that she gave us from the day before. The Free Body Exercise w/ circular motion, and the Unit 7 Study guide. Other than that nothing much happened. We learned how to draw free body diagrams w/ circular motion and read over pages 202-206 in the Duck book. Make sure you bring all supplies and tools needed for your catapults as they are do tomorrow.
Next scribe is Rosel
Next scribe is Rosel
Monday, March 24, 2008
monday - it snowed today
Well today we watched a short movie on circular motion ( AKA centripetal motion) and we answered questions based on the movie that is also related to the new section. You can ask whoever you want for the answers . Then we worked on study guide 7.2 PERIODIC MOTION and we also have a worksheet to complete.
DON'T FORGET THAT OUR CATAPULTS ARE DUE ON WEDNESDAY!!!!
DON'T FORGET THAT OUR CATAPULTS ARE DUE ON WEDNESDAY!!!!
Tuesday, March 18, 2008
a blog
Holy cow...what a late blog. whooops. Totally forgot..anyways...last Wednesday we just went over worksheets on the board then got more worksheets. Ummm...also we were assigned the catapult (don't know how to spell that) project. Remember, no elastics. I think that was the rule. Test on Wednesday!!! GOOD LUCK!!
Friday, March 14, 2008
Wednesday, March 12, 2008
March 11
We worked on and corrected the momentum worksheets. The test is on Wednesday on momentum and projectile motion.
Tuesday, March 11, 2008
March 6-7, 2008
Well, there was some confusion whether who will be the scribe for last Thursday and Friday, so i'm going to apologize for the lateness of this scribe. During the Thursday class, we just talked about elastic and inelastic collision. Then the rest of the class was spent on working on the following worksheets:
Chapter 9: Study Guide
Chapter 7: Momentum
9: Study Guide
Impulse and Momentum
During Friday's class, we did a lab on the conservation of momentum, one ball colliding with another. We rolled a sphere down a little ramp colliding with another sphere at the end of the ramp, set up at an angle either to the left or to the right. This lab was done to prove that the momentum before and after collision is equal.
Chapter 9: Study Guide
Chapter 7: Momentum
9: Study Guide
Impulse and Momentum
During Friday's class, we did a lab on the conservation of momentum, one ball colliding with another. We rolled a sphere down a little ramp colliding with another sphere at the end of the ramp, set up at an angle either to the left or to the right. This lab was done to prove that the momentum before and after collision is equal.
monday blog done on tuesday morning
i forgot to do this last night so here it is ..
in monday's class we went over the chapter 9 study guide, chapter 7-1 sheet and the section 9-1 sheet as well. after that we continued to work on our labs which is due today !
NO SCHOOL ON THURSDAY =)
and a test on both momentum AND projectiles next wednesday or thursday, if im not mistaken .
in monday's class we went over the chapter 9 study guide, chapter 7-1 sheet and the section 9-1 sheet as well. after that we continued to work on our labs which is due today !
NO SCHOOL ON THURSDAY =)
and a test on both momentum AND projectiles next wednesday or thursday, if im not mistaken .
Thursday, March 6, 2008
Wednesday, March 5, 2008
DYNAMICS
Today in class we went over the dynamics test. Here are the corrections to the test.
Well the first and second questions are similar, all you had to do was draw the forces acting on the objects. Watch out for how long the arrows are because the longer the arrow is the stronger the force. Well the best way to get your questions addressed and answered is by asking someone in class or the teacher. I'm sure any one of us are happy to help.
Well the first and second questions are similar, all you had to do was draw the forces acting on the objects. Watch out for how long the arrows are because the longer the arrow is the stronger the force. Well the best way to get your questions addressed and answered is by asking someone in class or the teacher. I'm sure any one of us are happy to help.
That's basically all we did in class and a lab. The lab I assume is to be done by tomorrow and handed in. It wasn't a hard lab and the write up isn't difficult as well. Voila. That was the class in physics today.
Tomorrows scribe will be MARK!
Friday, February 29, 2008
thursday's class
so all we did was go over worksheets on the board. Then Ms. K explained a little bit of atwood's experiment to us on the smartboard. Also, the lab was due. OH YEAH...and a test on friday. good luck! =)
Thursday, February 28, 2008
Tuesday, February 26, 2008
Tuesday Feburary 26
Today we went over 2 hand outs. One of them was a chapter 5 review and the other was a chapter 5 enrichment. The review had 12 questions and the enrichment has 5 questions. There is also a Test on FRIDAY which is based on dynamics.
Melissa to scribe for tomorrow.
Melissa to scribe for tomorrow.
Monday, February 25, 2008
February 25, 2008
There is really not much to say about today. All we did in class was complete a lab that involves a block of wood. The block of wood was placed at an incline in which it would be able to slide down at a constant velocity to see what forces were acting on it and which force become large enough to move the piece of wood down the incline. For the other trials, a string was attached to the block of wood and the string was passed over the pulley at the end of the inclined. For these trials the angle of the inclined was increased by 10 degrees and we needed to attach enough masses at the free end of the string so that the block will move up the plain with constant velocity when it is only given a slight push to overcome the static friction.
That's about it for my blog post the next scribe will be, DUONG.
That's about it for my blog post the next scribe will be, DUONG.
Very late Thursday Scribe
I forgot what we had done on Thursday so I had to ask the teacher today and that is to explain why this scribe is so late. Sorry about not having it up earlier. Unfortunately this is a school computer and extremely sucks so I cant do to much with it.
Thursday- We started off with a overhead transparency worksheet 6. It was pretty straight forward, mostly looking at the overhead or in the booklet and writing down the answer.
Then I believe we did 4 questions in the booklet. Page 196 #1-4. I it was a two step question, first finding F net with friction then plugging that in an equation for time. My final answer was 1.6 seconds.
*note- my answers are mostly likely incorrect and i cant remember if i did them properly or not and if the teacher went over the questions in class.
second question was much like the first, same basis but without friction.
third question was a bit better as it involved two ramps. you used the first ramp to find V2, then plug it into the second to get total distance. I got like 9.8 meters.
The last question was also pretty straight forward.
At the end of class we had 2 Review sheets to go over with a total of 17 questions.
I hope I did this correctly and the next scribe can be Someone... I cant tell cause this computer wont let me get onto the site so I don't know who hasn't done it yet.
Have a good day.
Thursday- We started off with a overhead transparency worksheet 6. It was pretty straight forward, mostly looking at the overhead or in the booklet and writing down the answer.
Then I believe we did 4 questions in the booklet. Page 196 #1-4. I it was a two step question, first finding F net with friction then plugging that in an equation for time. My final answer was 1.6 seconds.
*note- my answers are mostly likely incorrect and i cant remember if i did them properly or not and if the teacher went over the questions in class.
second question was much like the first, same basis but without friction.
third question was a bit better as it involved two ramps. you used the first ramp to find V2, then plug it into the second to get total distance. I got like 9.8 meters.
The last question was also pretty straight forward.
At the end of class we had 2 Review sheets to go over with a total of 17 questions.
I hope I did this correctly and the next scribe can be Someone... I cant tell cause this computer wont let me get onto the site so I don't know who hasn't done it yet.
Have a good day.
Thursday, February 21, 2008
late tuesday blog
well Im going to have to update this a bit later cause I cant remember what we did yesterday; and no one told me i was supposed to scribe. so this explains my lateness so I think il be scribe again on thursday to make up for my own sloppiness. il try to check more on the blog in the future.
Wednesday, February 20, 2008
Feb. 20
Today was basically a work period.
We got back our Free-Body Diagrams worksheet and any mistakes were corrected for us. We also went through the questions on page 196 of the "duck book". Answers to problems #1-3 were on inclined planes and posted up on the blog already. Probelm #4 will be taken up in tomorrow's class and that's about it.
Anyone wishing to rewrite their Acceleration test will be given the opportunity tomorrow at lunch.
We got back our Free-Body Diagrams worksheet and any mistakes were corrected for us. We also went through the questions on page 196 of the "duck book". Answers to problems #1-3 were on inclined planes and posted up on the blog already. Probelm #4 will be taken up in tomorrow's class and that's about it.
Anyone wishing to rewrite their Acceleration test will be given the opportunity tomorrow at lunch.
Tuesday, February 19, 2008
Saturday, February 16, 2008
Concepts
Hello fellow physics people. This is Lina and I’m slowly, but surely recovering from the lowest point of my academic career. Yes, my test was that bad. This is a note for everyone, beware of silly mistakes and study diligently!
So during our class on Friday, we first went over a worksheet that dealt with some basic concepts that would help us with our dynamics unit. Because I feel like it, I will illustrate the concept for you.
Let’s take our stick figure (who isn’t nearly as cute as Little Nellie Newton) and hang him from a bar. The net force would be zero because there is no acceleration and therefore the upward pull is the same as the downward pull. Let say that our figure, call him whatever you want, weighs 300
Here’s our first case:
Our figure weighs 300 N, so the scale reading would read just that.
Now we are measuring his weight with two scales, but don’t be fooled. Each scale would read 300 N because they are still measuring the same weight.
Our next cases are a little different.
In these cases, the weight is evenly distributed between two different parts so the reading for each of the scales’ readings would be half of the figure’s apparent weight. That’s half of 300N, so each scale would read 150 N.
Ok, so my illustrations aren’t that great, but I’m sure someone enjoyed looking at them.
Later on the class we the first three questions off of our worksheet on vectors and equilibrium which can be seen in the slides Ms. K posted up earlier. We will go over the rest of the questions the next day. We also received another worksheet on dynamics so don’t forget to work on that one as well.
That’s all from me today. Our next scribe will be… etimz!
Thursday, February 14, 2008
tests!!!!
In the beginning of class, we corrected the first part of the free body diagrams sheet.
Later, Ms Kozoriz came and gave us back our relative velocity sheets.
After , she gave us back our tests and went over the answers.
The answers are already posted on the blog.
The last thing we did was work on the back page of the FBD sheet and handed it in at the end of class.
Well, that's all!
The next scribe is LINA
Later, Ms Kozoriz came and gave us back our relative velocity sheets.
After , she gave us back our tests and went over the answers.
The answers are already posted on the blog.
The last thing we did was work on the back page of the FBD sheet and handed it in at the end of class.
Well, that's all!
The next scribe is LINA
Wednesday, February 13, 2008
New Unit!!
All right, so this is the last scribe done by me.
Today we got sheets for the new unit we're studying; Dynamics. If you didn't get them in class, there are four sheets you'll have to get from Ms.K. It will help if you read pages 132-142 from the textbook.
We didn't really do that much because we had a substitute for our class.
So the next scribe will be...
Today we got sheets for the new unit we're studying; Dynamics. If you didn't get them in class, there are four sheets you'll have to get from Ms.K. It will help if you read pages 132-142 from the textbook.
We didn't really do that much because we had a substitute for our class.
So the next scribe will be...
RoselS
Tuesday Feb 12 - Kinematics Test
All right, if you didn't read it yet, I said in the previous post for Monday that I would do the Monday, Tuesday and Wednesday scribes.
For Tuesday, all we did was the test for this unit.
So, nothing to report really.
For Tuesday, all we did was the test for this unit.
So, nothing to report really.
Monday Feb 11 - Kinematics
Hey everybody, sorry this scribe post was up so late and that it will be really short. I didn't really know I was scribe until earlier on this afternoon. So I'll be doing the scribes for Monday, Tuesday, and Wednesday.
So on Monday, all we did was go over the questions we were supposed to have done, 40-42. To see the answers look at Mondays Feb 11th's slides.
Afterwards, we everyone either worked on the assignments meant to be handed in (the Pink sheet and the Gray sheet) or the review questions on acceleration for the test on Tuesday.
So we really didn't do much that day, and was basically a study period.
The scribe for Feb 14, Thursday will be posted on the Wednesday scribe.
So on Monday, all we did was go over the questions we were supposed to have done, 40-42. To see the answers look at Mondays Feb 11th's slides.
Afterwards, we everyone either worked on the assignments meant to be handed in (the Pink sheet and the Gray sheet) or the review questions on acceleration for the test on Tuesday.
So we really didn't do much that day, and was basically a study period.
The scribe for Feb 14, Thursday will be posted on the Wednesday scribe.
Monday, February 11, 2008
FRIDAY'S Class
On Friday, we went over the sheet from the text book. The first question asked us to create a series of arbitrary vector quantities (two vectors) and identify the vector that could represent Vpg, which is the velocity with perspective to the ground.
The first one is correct because the vector with perspective to the ground is the longest side AND it meets a tail and a tail and the other end meets an arrow with an arrow. The second one is incorrect because every side is an arrow and a tail.
The second question deals with an airplane and a passenger walking on the plane. When you're dealing with questions that ask for a maximum and minimum velocity, it is collinear. Because the object is either moving with the velocity or moving in the opposite direction.
MAXIMUM VELOCITY
The first one is correct because the vector with perspective to the ground is the longest side AND it meets a tail and a tail and the other end meets an arrow with an arrow. The second one is incorrect because every side is an arrow and a tail.
The second question deals with an airplane and a passenger walking on the plane. When you're dealing with questions that ask for a maximum and minimum velocity, it is collinear. Because the object is either moving with the velocity or moving in the opposite direction.
MAXIMUM VELOCITY
100 km/h + 1.5 km/h = 101.5 km/hIt would be 100 km/h + 1.5 km/h because with respective to the ground the plane is already traveling at 100 km/h and since the passenger is walking in the same direction at a speed of 1.5km/h that is added to the planes speed which gives us a total of 101.5 km/h.
MINIMUM VELOCITY
100 km/h - 1.5 km/h = 98.5 km/hThe minimum speed with respect to the ground would be 98.5 km/h because since the plane is heading one direction, in this case to the East, and the passenger is walking 1.5 km/h in the opposite direction [W] then we subtract the velocities to get the minimum velocity.
The third question dealt with two cars, Car A with a ground speed of 80 km/h and Car B with a ground speed of 45 km/h.
a) Both cars are heading in the same direction. A behind B in the reference frame of A.
The third question dealt with two cars, Car A with a ground speed of 80 km/h and Car B with a ground speed of 45 km/h.
a) Both cars are heading in the same direction. A behind B in the reference frame of A.
45 km/h - 80 km/h = -35km/h
The next question deals with a boat that wishes to travel east. If there is a current of 10 km/h flowing north and the boat is capable of traveling at 30 km/h, find the heading and velocity of the boat as seen by a person on shore.
We would subtract because since Car A is gaining speed on Car B then it seems as though Car B is slower because Car A is going at 80 km/h which is faster than 45 km/h.
b) Use the reference frame of B for part a
It would be 80 km/h - 45 km/h = 35 km/h because Car A is faster and since it's behind Car B that means it looks like it's gaining speed on Car B
c) Both cars are heading towards each other. Take the reference frame of A.
It would be 45 km/h + 80 km/h = 125 km/h. Because both cars are heading towards one another, it makes it look as though the other car is coming at you faster cause your in motion and they are too coming towards you.
d) Use B's reference frame for part c
It's 125 km/h, its the same thing as part c. Same reasoning and logic.
b) Use the reference frame of B for part a
It would be 80 km/h - 45 km/h = 35 km/h because Car A is faster and since it's behind Car B that means it looks like it's gaining speed on Car B
c) Both cars are heading towards each other. Take the reference frame of A.
It would be 45 km/h + 80 km/h = 125 km/h. Because both cars are heading towards one another, it makes it look as though the other car is coming at you faster cause your in motion and they are too coming towards you.
d) Use B's reference frame for part c
It's 125 km/h, its the same thing as part c. Same reasoning and logic.
The next question deals with a boat that wishes to travel east. If there is a current of 10 km/h flowing north and the boat is capable of traveling at 30 km/h, find the heading and velocity of the boat as seen by a person on shore.
For number 38 you can solve the for the missing side and angle by using the cosine law because it's not a right angled triangle so we cannot use the Pythagorean theorem. We already know two sides and an angle, that's enough information to find the other missing side and angle.
Et Voila! That was Friday's class. And i believe that JESSICA is the scribe for tonight. Once again I'm terribly sorry for not scribing on Thursday or Friday, it totally slipped my mind. So to make up for it I actually tried on this scribe and finished Thursday's scribe as well. Sorry and hope this helps. Oh, and TEST tomorrow, so study and practice kiddy's.
Et Voila! That was Friday's class. And i believe that JESSICA is the scribe for tonight. Once again I'm terribly sorry for not scribing on Thursday or Friday, it totally slipped my mind. So to make up for it I actually tried on this scribe and finished Thursday's scribe as well. Sorry and hope this helps. Oh, and TEST tomorrow, so study and practice kiddy's.
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