The distance between two particles is 2 centimeters. If the distance is increased to 4 centimeters, the force will be ?

The new force is 1/4 of the previous force.

Explanation:

Given

----

---

Required

Determine the new force

Let the two particles be q1 and q2.

The initial force F1 is:

--- Coulomb's law

Substitute 2 for r1

The new force (F2) is

Substitute 4 for r2

Substitute

The new force is 1/4 of the previous force.

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