You are holding a bulletin board weighing w = 4.00 n in place against a wall while your friend secures it to the wall. to keep it from slipping, you apply a force p perpendicular to the bulletin board, pressing it directly into the wall. how large must this force be if the coefficient of static friction with the wall is 0.450?

Answerboth technicians (a) and (b);

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.