844J.
Assuming that there were no encumbrances during it's foreswing and it reached it's full potential at apogee.
I think the North Pole
If I understand this correctly
The answer of <span> the change in electric potential difference is</span> -1.0 × 10^7 V. It is defined as the work done per unit charge. A potential difference of 1 V means that 1 joule of work is done per coulomb of charge or 1 V = 1 J C-1.