Common transparent tape becomes charged when pulled from a dispenser. If one piece is placed above another, the repulsive force can be great enough to support the top piece's weight. Assuming equal point charges $($only an approximation$),$ calculate the magnitude of the charge if electrostatic force is great enough to support the weight of a $19\mathrm{.}76mg$ piece of tape held $3\mathrm{.}23cm$ above another.

C

Hint:

Notice that you are given the mass of the tape. You can use this to find the weight of the tape $($the force being countered by the repulsion of the charged particles$).$