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The figure shows two tiny 5.0-g spheres suspended from two very thin 1.0-m-long threads. The spheres repel each other after being charged to +28 nano-coulombs and hang at rest as shown. What is the angle θ? (k = 1/4πε ₀ = 8.99 × 10⁹ N · m²/C²)

010
1.0 m
1.0 m
5.0 g +
+5.0 g

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