Charges of 4 10^-6 C and -2 10^-6 C are 0.3 m apart in free space. The force between them is (k = 8.99 10^9 N m^2 C^-2):

  1. 1.6 N, attractive
  2. 0.24 N, attractive
  3. 0.799 N, attractive
  4. 0.799 N, repulsive
Answer

C) 0.799 N, attractive

F = kq1q2r^2 = 0.799 N; unlike charges attract. SLO P-11-E-07 · Application

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