g Electric field due to a 7.0 nC charge at a distance d is 237.0 N/C. What would be the magnitude of the electric field at a distance 5d from the charge

before we can answer, we have to see the choices that are printed there with the question.   that's the only way we can point you to the correct one.

chemical properties of thing

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.