You pull your sled through the snow and walk toward the hill in the park. As you pull the sled and it moves closer to the hill, are you doing positive work on the
sled? *

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

Ibelieve the answer is d. macula  hope my answer has you : )