What is the distance between the two charged spheres, in mm, if they repel each other with a force of 1.5×10−41.5×10 −4 N? The first sphere has a charge of -6.1 nC, and the second sphere has a charge of -9.7 nC.
a) 9.52 mm
b) 11.23 mm
c) 13.84 mm
d) 16.45 mm
