Student Exploration: Coulomb Force (static)
1. While they were in the dryer some electrons were removed from some items
and were transferred to other items.: How do you think the sock and underwear
became charged?
2. They won't stick together because they both would have the same charge.-
: Suppose two socks acquire the same charge. Do you think they would stick
together? Explain:
3. away from each other: Are the vectors for objects A and B pointing together or
away from each other?
4. they are repelled apart.: Are objects A and B attracted together or repelled
apart?
5. the length of both vectors are equal.: Compare the lengths of the vectors. What
do you notice?
6. : Observe: You can change the charge of each object by entering the desired value
in the qA and qB boxes. Observe the force vectors for each of the situations listed in
the table below. Based on the force vectors, state whether the objects are repelled
from one another, attracted to one another, or if there is no force at all.
7. repulsion: 1.0 × 10-4 C
1.0 × 10-4 C
8. attraction: -1.0 × 10-4 C
1.0 × 10-4 C
9. repulsion: -1.0 × 10-4 C
-1.0 × 10-4 C
10. no force: 1.0 × 10-4 C
0.0 × 10-4 C
11. repel: When the charges are the same, the two objects one
another.
12. attract: When the charges are opposite, the two objects one
another.
13. zero: When one of the objects has no charge, the resulting force is
14. I predict the electrostatic force will increase by half.: Predict: How do you
think the magnitude of the electrostatic force between two objects will change if the
charge of each object was doubled?
15. 0.9 N: Measure: Turn on Show vector notation for both objects. Set the charge
of objects A and B to 1.0 × 10-4 C. The force on object A is now -0.90i + 0j N. That
means that the force is -0.90 N in the x direction and 0 N in the y direction.
A. What is the magnitude of the force on object A? |FA| =
16. 0.9 N: B. What is the magnitude of the force on object B? |FB| =
17. The negative force indicates the force on A points to the left.: C. The force
on object A is negative. What does this indicate about the direction of the force?
1/2
1. While they were in the dryer some electrons were removed from some items
and were transferred to other items.: How do you think the sock and underwear
became charged?
2. They won't stick together because they both would have the same charge.-
: Suppose two socks acquire the same charge. Do you think they would stick
together? Explain:
3. away from each other: Are the vectors for objects A and B pointing together or
away from each other?
4. they are repelled apart.: Are objects A and B attracted together or repelled
apart?
5. the length of both vectors are equal.: Compare the lengths of the vectors. What
do you notice?
6. : Observe: You can change the charge of each object by entering the desired value
in the qA and qB boxes. Observe the force vectors for each of the situations listed in
the table below. Based on the force vectors, state whether the objects are repelled
from one another, attracted to one another, or if there is no force at all.
7. repulsion: 1.0 × 10-4 C
1.0 × 10-4 C
8. attraction: -1.0 × 10-4 C
1.0 × 10-4 C
9. repulsion: -1.0 × 10-4 C
-1.0 × 10-4 C
10. no force: 1.0 × 10-4 C
0.0 × 10-4 C
11. repel: When the charges are the same, the two objects one
another.
12. attract: When the charges are opposite, the two objects one
another.
13. zero: When one of the objects has no charge, the resulting force is
14. I predict the electrostatic force will increase by half.: Predict: How do you
think the magnitude of the electrostatic force between two objects will change if the
charge of each object was doubled?
15. 0.9 N: Measure: Turn on Show vector notation for both objects. Set the charge
of objects A and B to 1.0 × 10-4 C. The force on object A is now -0.90i + 0j N. That
means that the force is -0.90 N in the x direction and 0 N in the y direction.
A. What is the magnitude of the force on object A? |FA| =
16. 0.9 N: B. What is the magnitude of the force on object B? |FB| =
17. The negative force indicates the force on A points to the left.: C. The force
on object A is negative. What does this indicate about the direction of the force?
1/2
