An elevator descends into a mine shaft at rate of 15 metre per minute. a) What will be its position after 1 hour?
b) If it begins to descend 25m above ground, what will be its position after 45 minutes?

You yeah with the side of the yeah with a little bit of yeah.

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.