Answer: Use the formula F= k q1q2/r^2 where k= 1/4π€ and it's value in air is 9× 10^9.
q1=q2= 2.4×10^-6C
F= 0.5N
You will get the value of r^2 and then will have to find the squre root of that value.
Step-by-step explanation:
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