hi everyone!!! it's me, LORENZ!!! i guess this will be my last post for our class. Yesterday, we had a sub and she gave us a booklet 2.3 Ferromagnetism and the Domain Theory of Magnetism. She gave us time to read through it and then she told us to answer those 4 questions on 2.9 Exercise located at the back of the last page. Here are the answers that i got:
1) When magnetizing a steel nail, you must stroke it against a permanent magnet and heat or drop the magnet to lose the magnetization.
2) No, because aluminum can't be magnetize, must be made of a ferromagnetic material.
3) Real magnet can be repelled or attracted to either end, and ferromagnetic can stick on both ends.
4) It will not reflect solar radar from the sun.
After we finish correcting those 4 questions, she gave us some notes about Right Hand Rule. I am sorry but i did not copy those notes because it is already in our Chapter 24 Study Guide but i hope that everyone is now preparing for our upcoming final exam on Monday, January 26, 2009 in the school Gym at 1pm.
Like what nelsa said, everyone is been trying to finish their blog so i hope that everyone will get to finish theirs. So to continue this, i choose Lynel Pobre to do the next blog since she didn't get to do hers last time because of her other homework.
I'll see you guys on Monday!!=)
Saturday, January 17, 2009
Thursday, January 15, 2009
Study Guide..
Hello, hello friends! Yeah, I know I'm not Lorenz, I'm prettier. Just kidding! It's funny how ever since Ms. K told us that we had to have at least 3 scribe posts, everyone's been scrambling to get their last one done, hahaha.
Now down to business.
We had a sub today, Mr. Neufeld I believe was his name. He was pretty cool, he gave us a sudoku to do in the beginning of class and like.. three people finished it after 3 minutes.. or something like that. Hahaha, so then we stopped and did the actual work.
We finished (hopefully) our Chapter 24 Study Guide and corrected only the first two paragraphs because we ran out of time. Mm, so I guess I'll give you the list of words, in case you decided to skip today's class (shame, shame).
GENERAL PROPERTIES OF MAGNETS
01. pole
02. north
03. south
04. attract
05. repel
06. temporary
07. polarization
08. permanent
MAGNETIC FIELDS AROUND PERMANENT MAGNETS
01. touch
02. distance
03. magnetic field
04. magnet
05. tangent
06. strength
07. magnetic flux
08. flux
09. strength
10. poles
11. north
12. loops
13. unlike
14. force
15. aligned
16. concentrated
17. s-pole
18. attracts
19. repels
20. magnetic flux
21. lose
Yeaahh.. so that was today's class. See you all tomorrow!
Next scribe will be Lorenz, because he was supposed to be today's scribe. =)
Now down to business.
We had a sub today, Mr. Neufeld I believe was his name. He was pretty cool, he gave us a sudoku to do in the beginning of class and like.. three people finished it after 3 minutes.. or something like that. Hahaha, so then we stopped and did the actual work.
We finished (hopefully) our Chapter 24 Study Guide and corrected only the first two paragraphs because we ran out of time. Mm, so I guess I'll give you the list of words, in case you decided to skip today's class (shame, shame).
GENERAL PROPERTIES OF MAGNETS
01. pole
02. north
03. south
04. attract
05. repel
06. temporary
07. polarization
08. permanent
MAGNETIC FIELDS AROUND PERMANENT MAGNETS
01. touch
02. distance
03. magnetic field
04. magnet
05. tangent
06. strength
07. magnetic flux
08. flux
09. strength
10. poles
11. north
12. loops
13. unlike
14. force
15. aligned
16. concentrated
17. s-pole
18. attracts
19. repels
20. magnetic flux
21. lose
Yeaahh.. so that was today's class. See you all tomorrow!
Next scribe will be Lorenz, because he was supposed to be today's scribe. =)
Wednesday, January 14, 2009
January 14 2009 - YVANNE
Hey guys!
So I know I'm not Lynel Pobre, but she asked me if I can possibly do the scribe for her instead because she's stuck doing a thousand word essay due to procrastination! Good luck to her .
Anyways, there's really not much that we did today. Our whole class was dedicated to writing our Electric and Magnetic Fields test. I guess I'm just here for a couple of reminders and such.
Mrs. K handed out a couple of sheets for Magnetism. We should probably read through the booklet so we have an idea of what this unit will be about. There's also a Study Guide for Magnetism if you guys wanted to start on that (although the answers are in the green book, you can probably find them elsewhere!)
Do not forget our exam date!
Physics 30S Exam: January 26 2009 Monday
I think this is a great time to start looking through everything we've learned so that we do not end up scrambling at crunch time!
going going ... GONE!
ohh the scribe for tomorrow will be.. LORENZ BRUCAL cause he wants extra marks.
buahah . (:
-ydandan
So I know I'm not Lynel Pobre, but she asked me if I can possibly do the scribe for her instead because she's stuck doing a thousand word essay due to procrastination! Good luck to her .
Anyways, there's really not much that we did today. Our whole class was dedicated to writing our Electric and Magnetic Fields test. I guess I'm just here for a couple of reminders and such.
Mrs. K handed out a couple of sheets for Magnetism. We should probably read through the booklet so we have an idea of what this unit will be about. There's also a Study Guide for Magnetism if you guys wanted to start on that (although the answers are in the green book, you can probably find them elsewhere!)
Do not forget our exam date!
Physics 30S Exam: January 26 2009 Monday
I think this is a great time to start looking through everything we've learned so that we do not end up scrambling at crunch time!
going going ... GONE!
ohh the scribe for tomorrow will be.. LORENZ BRUCAL cause he wants extra marks.
buahah . (:
-ydandan
Tuesday, January 13, 2009
January 13, 2009
Hello everybody. This shall possibly be my last official scribe post for this blog. In addition, today is a big day. It is the day that marks the intervention of having a one month anniversary of blogging absences for this blog. It is also the day that precedes our Gravitational-Electric Fields Test. Good luck to everyone on that. As for what happened today in class, we went through a couple of worksheets and problems. Here is a concise summation of the essential bits gone through below.
We wholly went through Gravitation Fields Review - Worksheet. There exists three sample questions with answers at the very bottom of the last page. Be sure to check that out.
We went through Chapter 2: Motion - Exercise 2-1. Answers are as follows:
1. Greyhound speed=16m/s, Gazelle time=0.01s, and Turtle distance=30cm.
2. a) The BB is gaining distance and speed in each successive time interval.
b) Yes, distance is directly proportional to T^2 (time squared)
c) Distance Fallen: 1, 4, 9
d) Yes; 9cm, 11cm, 13cm. Distance Fallen: 1, 3, 5, 7
e) odd
3. a) 10, acceleration
b) time
c) 70m/s, 245, 10
Green Textbook Questions *forgot pages*
1) 20000 N/C
2) 7 x 10^-5 C
3) 4.44 x 10^-7 C
17. a) 1.6 x 10^-18 C
b) N = 10 electrons
In pre-conclusion, we received Chapter 24: Study Guide - 24.1 Magnets: Permanent and Temporary, The Earth's Magnetic Field, and 1.3 Magnetic Poles worksheets. Oh yeah, people need to scribe. I initially was just going to let the next scribe be anyone that needed to scribe, but seeing as how I took initiative after so many days, I shall choose a person so that they are obligated to scribe. Well hopefully they commit. Hmm. Roses are red, violets are blue, no available scribe name rhymes with blue, so Lynel I choose you :P
We wholly went through Gravitation Fields Review - Worksheet. There exists three sample questions with answers at the very bottom of the last page. Be sure to check that out.
We went through Chapter 2: Motion - Exercise 2-1. Answers are as follows:
1. Greyhound speed=16m/s, Gazelle time=0.01s, and Turtle distance=30cm.
2. a) The BB is gaining distance and speed in each successive time interval.
b) Yes, distance is directly proportional to T^2 (time squared)
c) Distance Fallen: 1, 4, 9
d) Yes; 9cm, 11cm, 13cm. Distance Fallen: 1, 3, 5, 7
e) odd
3. a) 10, acceleration
b) time
c) 70m/s, 245, 10
Green Textbook Questions *forgot pages*
1) 20000 N/C
2) 7 x 10^-5 C
3) 4.44 x 10^-7 C
17. a) 1.6 x 10^-18 C
b) N = 10 electrons
In pre-conclusion, we received Chapter 24: Study Guide - 24.1 Magnets: Permanent and Temporary, The Earth's Magnetic Field, and 1.3 Magnetic Poles worksheets. Oh yeah, people need to scribe. I initially was just going to let the next scribe be anyone that needed to scribe, but seeing as how I took initiative after so many days, I shall choose a person so that they are obligated to scribe. Well hopefully they commit. Hmm. Roses are red, violets are blue, no available scribe name rhymes with blue, so Lynel I choose you :P
Wednesday, December 17, 2008
December 17, 2008
Hello everybody! This is Alex :) I am scribing today, so lets get started.
Today was a work period so there isn't a lot to say. We had to finish our lab report, once we did that we were required to read page 8 of the white booklet Ms. Kozoriz (sorry if I spelled that wrong) gave us. Once we did that we had to do 4 worksheets. Sorry I don't have a scanner so I can't scan them onto this blog, however they were fairly easy just remember Newton's second law (a=Fnet/m) and Fnet= Fg + Fn. Fg= (m)*(g).
So that was basically it. I hope everyone has a wonderful Holiday and stays warm, see you tomorrow.
For the next post I don't know how the choosing process works so....... um how about Mark. Ms. Kozoriz can change it if she wants.
Today was a work period so there isn't a lot to say. We had to finish our lab report, once we did that we were required to read page 8 of the white booklet Ms. Kozoriz (sorry if I spelled that wrong) gave us. Once we did that we had to do 4 worksheets. Sorry I don't have a scanner so I can't scan them onto this blog, however they were fairly easy just remember Newton's second law (a=Fnet/m) and Fnet= Fg + Fn. Fg= (m)*(g).
So that was basically it. I hope everyone has a wonderful Holiday and stays warm, see you tomorrow.
For the next post I don't know how the choosing process works so....... um how about Mark. Ms. Kozoriz can change it if she wants.
Tuesday, December 16/08
Sorry for the late post, for thsoe who check this blog regularly, I kinda forgot and just remebered this morning. Well Yesterday we didnt do much. We learned about the weight and scale and how it REALLY feels when you move it up or down. We were also given a Lab to do which is probably due today if anyone is unsure.
Heres the notes she gave us, please make sure to correct me if I'm wrong because I'm writing this based on memory.Also sorry that I can't post any diagrams to explain this better.
F=mg
At this point the weight is at rest so it will feel normal.
F=mg + ma
You move the weight and scale along with it up and this is how it will feel...
It will become heavier at first then at a constant velocity you will feel normal. Then as you start to slow down as you reach the end the weight then becomes lighter.
F=mg -ma
This one is opposite direction with the opposite affect. You feel light at first as you move the weight and scale in the downward direction, then at constant velocity it feels normal. When you the start to slow down towards the end it will then become heavy.
*NOTE* When I say it feels normal it just means you can't tell if it got heavier or lighter then before.
The Lab...
For those who were confused on what they needed to do
What we had to do was get a rubber thingy(don't rember what its called) and tie to to a piece of string that is about 1.5 m's long. You then shorten the string by rolling in your hand to get 1.2m, 1.0m, 0.8m, 0.6m, 0.4m ,0.2m. These are the different lengths that you will be measuring how much time its takes for it to swing twenty cycles( one cycle equals the time it takes for it to come back from where you started it. Remember to start the rubber stopper up to the right of you and keep hand still will doing experiment. Its quite annoying to hold all the time so switch places with your partner if your arm feel tired. Record all the data 3 times each. Then average your time. The period is calculated by the (average time/20 cycles it did). Of course do the Analysis questions after you have completed this experiment and dont forget to hand in.
Sorry once again for the late post as I COMPLETELY FORGOT even though I was told before hand. :S
The next scribe I choose will be Alex Sharp. So good luck Alex with next scribe.
Heres the notes she gave us, please make sure to correct me if I'm wrong because I'm writing this based on memory.Also sorry that I can't post any diagrams to explain this better.
F=mg
At this point the weight is at rest so it will feel normal.
F=mg + ma
You move the weight and scale along with it up and this is how it will feel...
It will become heavier at first then at a constant velocity you will feel normal. Then as you start to slow down as you reach the end the weight then becomes lighter.
F=mg -ma
This one is opposite direction with the opposite affect. You feel light at first as you move the weight and scale in the downward direction, then at constant velocity it feels normal. When you the start to slow down towards the end it will then become heavy.
*NOTE* When I say it feels normal it just means you can't tell if it got heavier or lighter then before.
The Lab...
For those who were confused on what they needed to do
What we had to do was get a rubber thingy(don't rember what its called) and tie to to a piece of string that is about 1.5 m's long. You then shorten the string by rolling in your hand to get 1.2m, 1.0m, 0.8m, 0.6m, 0.4m ,0.2m. These are the different lengths that you will be measuring how much time its takes for it to swing twenty cycles( one cycle equals the time it takes for it to come back from where you started it. Remember to start the rubber stopper up to the right of you and keep hand still will doing experiment. Its quite annoying to hold all the time so switch places with your partner if your arm feel tired. Record all the data 3 times each. Then average your time. The period is calculated by the (average time/20 cycles it did). Of course do the Analysis questions after you have completed this experiment and dont forget to hand in.
Sorry once again for the late post as I COMPLETELY FORGOT even though I was told before hand. :S
The next scribe I choose will be Alex Sharp. So good luck Alex with next scribe.
Monday, December 15, 2008
Howdy Fellow Bloggers!
Today we didn't do much of anything that is new.
What we did was work more on the lab worksheet we were given on December 12, aka Friday. I believe that is due tomorrow, but that is just an assumption.
We were also given the answers for "Concept-Development Practice Page 13-1 -- Chapter 13: Gravitational Interactions", so here they are:
1. An apple that has a mass of 0.1kg has the same mass wherever it is. The amount of matter that makes up the apple
DOES NOT DEPEND UPON
the location of the apple. It has the same resistance to acceleration wherever it is -- its inertia everywhere is
THE SAME.
The weight of the apple is a different story. It may weigh exactly 1N in San Fransisco and slightly less in mile high Denver, Colorado. On the surface of the moon the apple would weigh 1/6N, and far out in outer space it may have almost no weight at all. The quantity that doesn't change with location is
MASS,
and the quantity that may change with location is its
WEIGHT.
That's because
WEIGHT
is the fore due to gravity on a body, and this force caries with distance. So weight is the force of gravity between two bodies, usually some small object in contact with the earth. When we refer to the
WEIGHT
of an object we are usually speaking of the gravitational force that attracts it to the earth.
2. If we stand on a weighing scale and find that we are pulled toward the earth with a force of 500N, the we weight 500N. Strictly speaking, we weight 500N relative tot he earth. How much does the earth weight? If we tip the scale upside down and repeat the weighing process, we can say that we and the earth are still pulled together with a force of 500N, and therefore, relative to us, the whole 6 000 000 000 000 000 000 000 000-kg earth weighs 500N! Weight, unlike mass, is a relative quantity.
Hmm, that seems to be it.
OH, also, if you are bored read pages 5 and 6 for tomorrows class in the Dynamics booklet. And tomorrow we have another lab, so don't miss it!
The scribe for tomorrow shall be... Anthony L!
Toodles!
What we did was work more on the lab worksheet we were given on December 12, aka Friday. I believe that is due tomorrow, but that is just an assumption.
We were also given the answers for "Concept-Development Practice Page 13-1 -- Chapter 13: Gravitational Interactions", so here they are:
1. An apple that has a mass of 0.1kg has the same mass wherever it is. The amount of matter that makes up the apple
DOES NOT DEPEND UPON
the location of the apple. It has the same resistance to acceleration wherever it is -- its inertia everywhere is
THE SAME.
The weight of the apple is a different story. It may weigh exactly 1N in San Fransisco and slightly less in mile high Denver, Colorado. On the surface of the moon the apple would weigh 1/6N, and far out in outer space it may have almost no weight at all. The quantity that doesn't change with location is
MASS,
and the quantity that may change with location is its
WEIGHT.
That's because
WEIGHT
is the fore due to gravity on a body, and this force caries with distance. So weight is the force of gravity between two bodies, usually some small object in contact with the earth. When we refer to the
WEIGHT
of an object we are usually speaking of the gravitational force that attracts it to the earth.
2. If we stand on a weighing scale and find that we are pulled toward the earth with a force of 500N, the we weight 500N. Strictly speaking, we weight 500N relative tot he earth. How much does the earth weight? If we tip the scale upside down and repeat the weighing process, we can say that we and the earth are still pulled together with a force of 500N, and therefore, relative to us, the whole 6 000 000 000 000 000 000 000 000-kg earth weighs 500N! Weight, unlike mass, is a relative quantity.
Hmm, that seems to be it.
OH, also, if you are bored read pages 5 and 6 for tomorrows class in the Dynamics booklet. And tomorrow we have another lab, so don't miss it!
The scribe for tomorrow shall be... Anthony L!
Toodles!
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