AtWhatDistanceDoesTheElectricFieldProducedByAChargeOf-11µC HaveAMagnitudeEqualTo9.3x10^4 N/C

Question

Physics question

Answer 1

E = kq / r^2 where k = 9 x 10^9 N m^2 / C^2

 

r = sqrt(k q / E) = sqrt[(9 x 10^9)(11 x 10^-6) / (9.3 x 10^4)] m = 1.032 m