G And E Review
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Showing posts with label gravitational fields. Show all posts
Showing posts with label gravitational fields. Show all posts
Monday, June 1, 2009
Wednesday, May 27, 2009
Gravitational Fields
The day begins with the looking over of the Chapter 5 worksheet. Students were requested to answer one of the 12 questions on the white board.
Chapter 5 Review
1. 0.29 m/s^2
2. 5 kg
3. 22 x 10^
4. 145 N
5. -0.53 m/s^2
*note: During class I was preoccupied with trying to create an account for this blogger and did not notice the answers following question 5 were written on the back end of the classroom. I do not trust my own answers to post it here.
After answering and correcting the Chapter 5 Review, we were given the Electrical Field/Lines booklet and Chapter 21 Study Guide.
That is all.
Next scribe will be chosen in class tomorrow.
Chapter 5 Review
1. 0.29 m/s^2
2. 5 kg
3. 22 x 10^
4. 145 N
5. -0.53 m/s^2
*note: During class I was preoccupied with trying to create an account for this blogger and did not notice the answers following question 5 were written on the back end of the classroom. I do not trust my own answers to post it here.
After answering and correcting the Chapter 5 Review, we were given the Electrical Field/Lines booklet and Chapter 21 Study Guide.
That is all.
Next scribe will be chosen in class tomorrow.
Tuesday, May 26, 2009
Gravitational Fields
Today in class we went over the Falling and Air Resistance sheets that we were given yesterday.
Here are the answers to the Bronco skydives sheet:
Circle the correct answers.
1) Most
2) a,b
3) d,e
4) still downwards
5) c,f
6) c,f
7) c
8) greater
a) a= 10 m/s²=
b) a= 6 m/s²
c) a = 0 m/s²
d) a = -2 m/s²
e) a = -10 m/s²
f) a = 0 m/s²
Here are the answers to the second sheet we were given. It's the sheet with the 7 problems.
1) Air resistance is equal to weight.
2) Air resistance to weight ratio is less for the skydiver.
Increase the surface area to make both terminal speeds equal.
3) Fnet = 25 N
Fnet = 10 N [ down ]
Fnet = 0 N
4) 100 N
5) As a skydiver falls faster and faster through the air, the net force decreases.
Acceleration decreases.
Reason: As she is falling through the air, there is an increase in air resistance.
6) She gains more speed in the first second of fall.
She gains more distance in the ninth second of fall.
Here are the answers to the Bronco skydives sheet:
Circle the correct answers.
1) Most
2) a,b
3) d,e
4) still downwards
5) c,f
6) c,f
7) c
8) greater
a) a= 10 m/s²=
b) a= 6 m/s²
c) a = 0 m/s²
d) a = -2 m/s²
e) a = -10 m/s²
f) a = 0 m/s²
Here are the answers to the second sheet we were given. It's the sheet with the 7 problems.
1) Air resistance is equal to weight.
2) Air resistance to weight ratio is less for the skydiver.
Increase the surface area to make both terminal speeds equal.
3) Fnet = 25 N
Fnet = 10 N [ down ]
Fnet = 0 N
4) 100 N
5) As a skydiver falls faster and faster through the air, the net force decreases.
Acceleration decreases.
Reason: As she is falling through the air, there is an increase in air resistance.
6) She gains more speed in the first second of fall.
She gains more distance in the ninth second of fall.
7) We used the following free body diagram to answer this question.
After correcting the sheets we were given a hand out on Static Friction. We went over this hand out and were given out two review packages. If you weren't here today you should go see Ms. Kozoriz to get these sheets.
That was basically it for today's class.
Monday, May 25, 2009
May 25 2009
Today in class we went over the two sheets ms.k gave to us on friday. One of the sheets answers are below this blog. The other sheet we did on the white boards. You will have to see someone in class for the answers for that sheet. today Ms.K gave us two more worksheets, she asked that they are to be finished for tomorrow's class so we can correct both of them in class. That's all we did today. Oh i forgot question 9 and 10 on the second sheet had to be handed in today. So that's it!!!!!!
Thursday, May 21, 2009
gravitational fields
hey everyone!
The Gravitational Field
A field is something that has a magnitude and a direction at every point in space. Gravity is a good example - we know there is an acceleration due to gravity of about 9.8 m/s2 down at every point in the room. Another way of saying this is that the magnitude of the Earth's gravitational field is 9.8 m/s2 down at all points in this room.
Gravitational field: g = F/m
where F is the force of gravity.
The Gravitational Field
A field is something that has a magnitude and a direction at every point in space. Gravity is a good example - we know there is an acceleration due to gravity of about 9.8 m/s2 down at every point in the room. Another way of saying this is that the magnitude of the Earth's gravitational field is 9.8 m/s2 down at all points in this room.
Gravitational field: g = F/m
where F is the force of gravity.
gravitational field
hey everyone
in today's class we did a lab on gravitational field. Mrs.K handed back our labs and our assignment on Force-Vector Diagram. Mrs. K didn't go over the assignment that she handed back. But the beginning of the class we did weight and the formula of the weight is f=mg, f=mg+ma and f=mg_ma. my advice to all of you is that if you want to be successful in this world, always to kind and generous to everyone. thank you.
next scriber will be ............................................................
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