A 22 nC charge is placed at the origin of an x-y coordinate system. A 16 nC charge is placed at coordinate (0, 8cm) and a -14 nC charge is at (-6cm, 0).
a. What is the electric potential at coordinate (-6cm, 8cm)?
b. What is the magnitude and direction of the electric field at coordinate (-6cm, 8cm)?
c. What would be the magnitude of the acceleration of a proton released from rest at coordinate (-6cm, 8cm)?