Two Equally Charged Tiny Spheres of Mass 1 $414 \mathrm {~m} / \mathrm { s } ^ { 2 }$

question 65

Multiple Choice

Two equally charged tiny spheres of mass 1.0 g are placed 2.0 cm apart. When released, they begin to accelerate away from each other at $414 \mathrm {~m} / \mathrm { s } ^ { 2 }$ What is the magnitude of the charge on each sphere, assuming only that the electric force is present? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

• A) 140 nC
• B) 120 nC
• C) 95 nC
• D) 75 nC

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