Charges of 1.6 10^-19 C and 1.6 10^-19 C are 1 10^-10 m apart in free space. The force between them is (k = 8.99 10^9 N m^2 C^-2):

  1. 2.3 10^-18 N, repulsive
  2. 2.3 10^-8 N, attractive
  3. 4.6 10^-8 N, repulsive
  4. 2.3 10^-8 N, repulsive
Answer

D) 2.3 10^-8 N, repulsive

F = kq1q2r^2 = 2.3 10^-8 N; like charges repel. SLO P-11-E-07 · Application

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