A charge + 170 nC sits at the origin (x,y = 0,0). You bring in a series 4 charges each of the same + 170 nC charge from a distance very far away. The charges are brought to positions (in x,y format) (-2.7,-2.7), (-2.7,2.7), (2.7,2.7), (2.7,-2.7) (where the distances are in cm) and fixed in place. The central charge is then released. What is it's kinetic energy when it is far away from the charge distribution.