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We can use Coulomb’s law to figure out the distance between the two point charges. Coulomb’s law states:
(Where FF is the electrostatic force, kk is Coulomb’s constant, q_1q1 is the charge of the first particle, q_2q2 is the charge of the second particle, and rr is the distance between the two charges)
Substitute the values we know into our equation.
(isolate for r)
5.7r^2=(8.99\times 10^9)(26\times 10^{-6})(47\times 10^{-6})5.7r2=(8.99×109)(26×10−6)(47×10−6)r^2=1.9273298r2=1.9273298r=\sqrt{1.9273298}=1.39r=√1.9273298=1.39 m
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