A mass has a charge of a $-2$e$,$ where $\text{'}$e is the charge on an electron. $1$ fV $-10$ V$,$ e $--1\mathrm{.}60*1019$ C$,$ K$.-8\mathrm{.}99*10\%$ N$.$m$?/$C$?1.$ Determine the electric potential $($in nV$)$ due to the charge at distance r$=2$ mm from the charge $2.$ Determine the electric potential difference $($in jiV$)$ between a point that is $2$r away and this point, that is V$(2$r$)-$ V$($r$).$ Submit the potential difference you obtained in $2)$ with four decimal places as your answer. DO NOT USE EXPONENTIAL FORM. You are required to show your work for both $1)$ and $2)$ in the file you submit. Round off the final answers to the correct number of significant digits for both $1)$ and $1).$ NOTE: Canvas will assign you the full credit for this question if you have correct answer for $2)$ and vice$-$versa. Be aware that you will be assigned a final score after I look at your work for all the questions.;