The kinetic energy of charge Q1 at the given distance is [tex]3.086 \times 10^{12} \ J[/tex].
Force between the two charges
The force between the two charges is determined by applying Coulomb's law;
[tex]F = \frac{kq_1 q_2}{r^2} \\\\F = \frac{9\times 10^9 \times 24 \times 6\times 10^{-6}}{(0.03)^2} \\\\F = 1.44 \times 10^9 \ N[/tex]
Based on the law of conservation of energy, the kinetic energy of the charge is equal to the potential energy of the charge.
[tex]K.E = U = \frac{kq_1}{r} = \frac{9 \times 10^9 \times 24}{0.07} = 3.086 \times 10^{12} \ J[/tex]
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