Two 4.00 C charged particles are located on the x axis. One is at x = 1.00 m, and the other is at x = -1.00 m. (a) Determine the electric field on the y axis at y = 0.700 m. N/CI+ N/C j (b) Calculate the electric force on a -3.00 C charge placed on the y axis at y = 0.700 m. Ni+ Nj