An infinite plane of charge with surface charge density 1 = 3 C/m2 is parallel to the xz plane at y = 0.6 m. A

An infinite plane of charge with surface charge density σ1 = 3 μC/m2 is parallel to the xz plane at y = –0.6 m. A second infinite plane of charge with surface charge density σ2 = –2 μC/m2 is parallel to the yz plane at x = 1 m. A sphere of radius 1 m with its center in the xy plane at the intersection of the two charged planes (x = 1 m, y = –0.6 m) has a surface charge density σ3 = –3 μC/m2. Find the magnitude and direction of the electric field on the x axis at

(a) x = 0.4 m and

(b) x = 2.5 m.