Two m = 6.0g point charges on 1.0-m-long threads repel each other after being charged to q = 120nC , as shown in the figure. What is the angle θ? You can assume that θ is a small angle. Hopefully the image will work. I feel like something is missing. I've gotten 7.4 and 3.4 degrees - both wrong. I know the sum of the forces in all directions must equal zero. My equations then are: Fx = -Tsinθ+Felectric Fy = Tcosθ - mg We know m, g, and q. I know that coulomb's law is: F = Kq^2/r^2 ... but we don't know r. Any ideas?