In Figure particle 1 (of charge + 2.00pC), particle 2 (of charge ?? 2.00pC), and particle 3

Question:

In Figure particle 1 (of charge + 2.00pC), particle 2 (of charge ?? 2.00pC), and particle 3 (of charge + 5.00pC) form an equilateral triangle of edge length a = 9.50 cm.

(a) Relative to the positive direction of the x axis determines the direction of the force Ft on particle 3 due to the other particles by sketching electric field lines of the other particles.

(b) Calculate the magnitude of forceF3.