Two grocery carts have the same initial total momentum. the two carts collide, and now cart b has a greater final velocity. which best describes the final total momentum of both the carts compared to the initial total momentum? a it is less if cart b has a smaller mass. b it is greater if cart b has a greater mass. c it is the same if no external forces are added. d it depends on the masses of cart a and cart b. nvm, answer is c

Letter a, because when there are unlike charges they will always attract to each other.

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.