There are 2 point charges. q1 is 4nc and is at (-2,0). q2 is -2nc and is at (0,3).
how much work does the electric field do when a third point charge of +3.00 nc is moved from infinitely far away and placed at the origin?
i know infinitely far means va will be 0. however because there are 2 other charges instead of 1, i do not know how to manipulate k(q)/d to fit all the charges in.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.