If Two Metal Balls Each Have a Charge of -10^-6 $\times$

question 51

Multiple Choice

If two metal balls each have a charge of -10^-6 C and the repulsive force between them is 1 N, how far apart are they? (Coulomb's constant is k=9.0 $\times$ 10⁹ N^.m²/C².)

• A) 9.5 m
• B) 9.0 mm
• C) 9.5 cm
• D) 0.9 m

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