The Figure Shows Two Tiny 5

Multiple Choice

The figure shows two tiny 5.0-g spheres suspended from very light 1.0-m-long threads. The spheres repel each other after each one is given the same positive charge and hang at rest when θ = 4.1°. What is the charge on each sphere? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

A) 22 nC
B) 89 nC
C) 360 nC
D) 180 nC
E) 45 nC