Draw: An X-Y axis and place ONE charge at the origin, ANOTHER charge at a point x=+b away (on the +x-axis), a THIRD charge at a point y=+b (on the +y-axis) and a FOURTH charge at the point (+b, +b) (that is, at x=b, y=b, in the first quadrant). Each charge has the same charge +Q and the same mass +m. Part A. Deduce a symbolic expression for the Energy stored in this configuration? Note: You do NOT need to simplify your answer. However, your final answer in terms of known quantities such as Q, m, b and known constants of nature (NOT all of which may be necessary). Part B. If you initially hold all of them in place (at rest) and then let go all of them simultaneously, they will repel and move away. Deduce a symbolic expression for how fast will each of them be moving when they move to a distance very, very far away? Note: answer must be in terms of known quantities such as Q, m, b and known constants of nature