John dragged a wooden block across a table with 4 different surfaces and the resultsof the experiment are shown in the table below. type of surface average force needed (n)a 105b 88c 127d 94(a) arrange in order, starting from thesmoothest surface to the roughestsurface. in another experiment, john gluedsurface a from the first experimentonto a ramp and pulled the samewooden block up the ramp. (b) will the force needed to pull the wooden block up the ramp be more than, less than orthe same as 105n? explain your answer.

The answer is a 0.64 volts

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.