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.
THURSDAY'S Class
I was supposed to scribe for Thursday's class, unfortunately I forgot to scribe that night. I also forgot to scribe for Friday's class as well (I can't believe that I forgot to scribe for those two days T_T), i apologize for not scribing. Well, on thursday we were given worksheets to work on. The worksheet with the questions from the text book was what we were supposed to work on because on friday we were going to go over it. Just a reminder the pink worksheet was supposed to be handed in on Monday and the ivory sheet is supposed to be handed in on Tuesday. For the rest of the class most people worked on the pink sheet or the sheet that had questions from the text book.
Friday, February 8, 2008
Wednesday, February 6, 2008
Hmm?
Well well well, since there was so much that happened today in class I don't know where to begin. First we went over the questions that we were given on our first day of semester two, and since they were pretty easy, we got through them relatively fast. Then we viewed some sides on deriving formulas in which we were given a second worksheet like the first one and given 2 other handouts. The pink sheet is for marks and is due for Monday so no worries, and for the other sheet with questions 31-42 I don't remember if they are supposed to be handed in. Well that's all I can think of for today's class, so enjoy the night. O yea the next scribe will be SAMUS
Monday, February 4, 2008
Scribe List
This is The Scribe List. Every possible scribe in our class is listed here. This list will be updated every day. If you see someone's name crossed off on this list then you CANNOT choose them as the scribe for the next class.
This post can be quickly accessed from the [Links] list over there on the right hand sidebar. Check here before you choose a scribe for tomorrow's class when it is your turn to do so.
This post can be quickly accessed from the [Links] list over there on the right hand sidebar. Check here before you choose a scribe for tomorrow's class when it is your turn to do so.
van DUONG lauressa(4) | Jenny(5) SAMUS(3) |
Subscribe to:
Posts (Atom)
