Two charged beads are on the plastic ring in part (a) of the figure below. Bead

Question

Two charged beads are on the plastic ring in part (a) of the figure below. Bead 2, which is not shown, is fixed in place on the ring, which has radius R = 72.0 cm. Bead 1 is initially at the right side of the ring, at angle ? = 0°. It is then moved to the left side, at angle ? = 180°, through the first and second quadrants of the xy coordinate system. Part (b) of the figure gives the x component of the net electric field produced at the origin by the two beads as a function of ?. Similarly, part (c) of the figure gives the y component.

http://www.webassign.net/hrw/W0473-N.jpg


(a) At what angle ? is bead 2 located? (Assume that it is located in the lower half of the ring.)
-90 ?? °

(b) What is the charge of bead 1?
3.21e-06 C wrong!!

(c) What is the charge of bead 2?
-2.57e-06 C wrong!!

Explanation / Answer

maybe for part a 180+ 90 = 270° ø = 270° for b F = kq/(r^2) from the graph 1, F = 5*10^4 So q = 2.88 * 10 ^ -6 C for C F = kq/(r^2) from graph 2 , F = 4*10^4 q = 2.304 * 10 ^-6 C if part c is wrong try to put negative sign for it

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