Two charged beads are on the plastic ring in Figure (a) Bead 2, which is not shown, is fixed in place on the ring, which has radius R = 60.0 cm. Bead 1 is initially on the x axis at angle ? = 0o. It is then moved to the opposite side, at angle ? = 180o, through the first and second quadrants of the xy coordinate system. Figure (b) gives the x component of the net electric field produced at the origin by the two beads as a function of ?, and Figure (c) gives the y component. The vertical axis scales are set by Exs = 5.0 x 104 N/C and Eyx = - 9.0 x 104N/C.

(a) At what angle ? is bead 2 located? What are the charges of?

(b) Bead 1 and

(c) Bead 2?

Ring Bead I (a) 180 90 90 180 --E (b) (c) (0/N ,01) "