Two positive charges each of charge q are fixed on the y-axis, one at y = d and the other at y = d as in the figure shown below. A third positive charge Zq located on the x-axis at x = 2d is released from rest. ,'l' (D (a) Find a symbolic expression for the total electric potential due to the rst two charges at the location of the charge Zq. (Use any variable or symbol stated above along with the following as necessary: ke for the Coulomb constant.) V: (b) Find a symbolic expression for the electric potential energy of the charge Zq. (Use any variable or symbol stated above along with the following as necessary: ke for the Coulomb constant.) PE = (c) Find a symbolic expression for the kinetic energy of the charge 2q after it has moved infinitely far from the other charges. (Use any variable or symbol stated above along with the following as necessary: ke for the Coulomb constant.) KE= (cl) Find a symbolic expression for the speed of the charge Zq after it has moved infinitely far from the other charges if its mass is m. (Use any variable or symbol stated above along with the following as necessary: ke for the Coulomb constant.) v