Charges q₁, q₂, and q₃ are all along the same line with q₁ on the left, q₃ on the right, and q₂ exactly midway between q₁ and q₃. q₁ = 1.0 C, q₂ = -2.0 C, and q₃ = +4.0 C.
1. What is the direction of the net force acting on q₁? (Ignore gravity.)
2. What is the direction of the net force acting on q₂?
3. What is the direction of the net force acting on q₃?
