What is the magnitude of the force of repulsion between them?

In summary, the question asks about the force of repulsion between two point charges separated by a distance r. If the separation is reduced to 0.293 times the original value, what is the new magnitude of the force? The formula used to calculate this is F = k*qq/r^2, and the resulting answer is 2.7x10^-27.
  • #1
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Homework Statement



Two point charges are separated by a distance r and repel each other with a force F. If
their separation is reduced to 0.293 times the original value, what is the magnitude of
the force of repulsion between them?

Homework Equations





The Attempt at a Solution

 
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  • #2
What would your approach be here?
 
  • #3
0.293 + r+F= r+ 0.293?
 
  • #4
Based on what formula?
 
  • #5
F= Keq/r sqed
 
  • #6
So F = k*qq/r2

They want you to use .293*r instead or r

What effect does that have on F?
 
  • #7
F is consider the electric field force
 
  • #8
Yes.

So what's the answer?
 
  • #9
F = k*qq/r2 F= 8.99x 10^9 * (1.6x 10 ^-19 ) sqed divide by .293 = 2.68x 10^ -27,
 
Last edited:

Related to What is the magnitude of the force of repulsion between them?

1. What is the definition of "force of repulsion"?

The force of repulsion is a type of force that acts between two objects with like charges or magnetic poles, causing them to push away from each other.

2. How is the magnitude of the force of repulsion calculated?

The magnitude of the force of repulsion can be calculated using Coulomb's Law for electrostatic forces or the Law of Magnetic Force for magnetic forces. These equations take into account the distance between the two objects and the strength of their charges or poles.

3. Does the magnitude of the force of repulsion depend on the distance between the two objects?

Yes, the magnitude of the force of repulsion is inversely proportional to the square of the distance between the two objects. This means that as the distance increases, the force of repulsion decreases.

4. Can the force of repulsion be greater than the force of attraction between two objects?

Yes, if the two objects have like charges or poles, the force of repulsion will be greater than the force of attraction. This is because like charges or poles repel each other, while opposite charges or poles attract each other.

5. How does the magnitude of the force of repulsion compare to other types of forces?

The magnitude of the force of repulsion can vary greatly depending on the strength of the charges or poles and the distance between the objects. In some cases, it can be stronger than other types of forces such as friction or gravitational forces.

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