Answer:
q=3.09 x 10^-7 C
Explanation:
According to Coulomb's Law
F=k q1 q2 / r^2
Since q1= q2 ( Because charges are equal)
therefore
F=k q.q / r^2
or
F=k q^2/ r^2
Now
0.034 = 9 x 10^9 x q^2 / (0.16)^2
or
q^2 = 0.034 x 0.0256 / 9 x 10^ 9
q^2 = 9.6 x 10^-14
Taking square root
q=3.09 x 10^-7 C
