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The electrostatic attracting force on a small sphere of charge \( 0.2 \mu \mathrm{C} \) due to another small sphere of charge \( -0.3 \mu \mathrm{C} \) in air is \( 0.3 \mathrm{~N} \). The distance between the two spheres is:
(A) \( 43.2 \times 10^{-6} \mathrm{~m} \)
(B) \( 4.24 \times 10^{-3} \mathrm{~m} \)
(C) \( 4.24 \times 10^{-2} \mathrm{~m} \)
(D) \( 4.24 \mathrm{~m} \)
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