Seven small metal spheres are arranged in a hexagonal pattern as illustrated in Figure 22.35. Spheres 1 and 7 carry equal amounts of positive charge; the other spheres are uncharged.

(a) To give sphere 7 an acceleration \(\vec{a}\) that points to the right, what (single) other sphere must be charged? There may be more than one possibility.

(b) What are the sign and magnitude of that charge?

Transcribed Image Text:

Figure 22.35 +9