Two point charges Q1=2.4 nC and Q2=-6.5 nC are 0.1 m apart. Q1 is located at the origin
and Q2 is on the x-axis. Point A is midway between them. Point B is 0.08 m from Q1 and
0.06 m from Q2. Point B is above the x-axis. Take the electric potential to be zero at
infinity. What is
(a) the potential at point A?
(b) the potential at point B?
(c) the work done by the electric field on a charge of 2.5 nC that travels from point B to
point A?