Final answer:
The question asks for the diameter of a charged plastic sphere based on its charge, but without additional information such as charge density or potential, the diameter cannot be determined from the charge alone.
Step-by-step explanation:
The question presented is about a charged plastic sphere and does not provide enough information to directly calculate the diameter of the sphere based on the charge alone. The charge on the sphere is given as -29.0 μC, but this does not inform us about the sphere's size without additional context, such as the charge density or potential. To find the diameter, we would need a formula that relates these quantities, which typically comes from electrostatic principles. In general, if we have a sphere with a known charge and potential, we could use the formula V = kQ/R, where V is the potential, k is Coulomb's constant (8.99 × 10^9 N·m^2/C^2), Q is the charge, and R is the radius of the sphere. If the potential were known, the diameter would be twice the radius we find from rearranging the formula to solve for R. However, without such information, we cannot determine the diameter of the sphere based only on the given charge.