(Answered) Physics Gizmos Student Exploration: Coulomb Force (Static)
116 views 0 purchase
Course
Gizmos Student Exploration: Coulomb Force
Institution
Gizmos Student Exploration: Coulomb Force
Student Exploration: Coulomb Force (Static)
Vocabulary: Coulomb’s law, electrostatic force, vector
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Have you ever taken clothes out of the dryer and found a sock stuck to your underwear? Static cling is an example of electrost...
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Have you ever taken clothes out of the dryer and found a sock stuck to your underwear? Static
cling is an example of electrostatic forces, or the forces that exist between charged objects.
1. How do you think the sock and underwear became charged? The sock and the underwear
became charged because they have different charges.
2. Suppose two socks acquire the same charge. Do you think they would stick together? No_
Explain: _Because they would repel each other since they have the same charge.
Gizmo Warm-up
As clothes are tumbled in a dryer, electrons are
rubbed off some items, giving them a positive charge,
and deposited on other items, giving them a negative
charge. These charged items exert electrostatic
forces on one another. You can explore these forces
with the Coulomb Force (Static) Gizmo™.
In its initial settings, the Gizmo shows two objects that each have a charge (q) of 10.0 × 10-4 C
(coulombs). Turn on the Show force vector checkboxes for objects A and B. The arrows
coming from each object are vectors that represent the electrostatic force. The direction and
length of each vector show the direction and magnitude (strength) of each force.
1. Are the vectors for objects A and B pointing together or away from each other? _Away_
2. Are objects A and B attracted together or repelled apart?
3. Compare the lengths of the vectors. What do you notice?
, Get the Gizmo ready:
Activity A:
• Turn on Show grid. Place object A on the x-axis at
The effect of -5 and object B on the x-axis at +5.
charge • Check that Show force vector is turned on for
each object.
Question: How does charge affect the strength of the electrostatic force?
1.
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.
qA qB Attraction, repulsion, or no force?
-4 -4
1.0 × 10 C 1.0 × 10 C Repulsion
-1.0 × 10-4 C 1.0 × 10-4 C Attraction
-1.0 × 10-4 C -1.0 × 10-4 C Repulsion
1.0 × 10-4 C 0.0 × 10-4 C No force
2.
Make a rule: Complete the following sentences with the words “attract,” “repel,” or “zero.”
When the charges are the same, the two objects repel one another.
When the charges are opposite, the two objects attract one another.
When one of the objects has no charge, the resulting force is zero.
3.
Predict: How do you think the magnitude of the electrostatic force between two objects will
change if the charge of each object was doubled? The magnitude of the electrostatic
force would be doubled which would make in increase.
4.
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| = 0.90i
B.
What is the magnitude of the force on object B? |FB| = 0.90i
C.
The force on object A is negative. What does this indicate about the direction of the
force? _It’s going in the opposite direction.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StudyConnect. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
