Two point charges, separated by 15 cm, have charge values of +2.0 µC and -4.0 µC, respectively. What is the value of the mutual force between them? (ke = 8.99 × 10^9 N×m2/C2)
a. 8.0 × 10^-12 N
c. 320 N
b. 3.6 × 10^-8 N
d. 3.2 N
D
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