Two point charges exert a 6.5 N force on each other. What will the force become

Question

Two point charges exert a 6.5 N force on each other. What will the force become if the distance between then is increased by a factor of 3?
How do I know what the 2 point charges are to begin with? And how do I know what the origanal distance is if all I’m given is the force? Two point charges exert a 6.5 N force on each other. What will the force become if the distance between then is increased by a factor of 3?
How do I know what the 2 point charges are to begin with? And how do I know what the origanal distance is if all I’m given is the force?
How do I know what the 2 point charges are to begin with? And how do I know what the origanal distance is if all I’m given is the force?

Explanation / Answer

F = kq1q2 / r^2 = 6.5 N

so Force is inversely proportional to the sqaure of the distance

so when the distance is increased by a factor of 3 , force is decrease by a factor of 9

F(new) = 6.5 / 9 = 0.72 N

No we cannot both the charges and distance if nothing is given

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