Two protons and an electron are arranged so that they sit at the vertices of an equilatera triangle with side length d = 9cm Then, the charges are moved farther apart so that they form a new equilateral triangle with twice the area () Did doubling the area of the triangle require a net input of energy? Or was energy released by the system of charges? Discuss qualitatively within your group. (No calculations required ) (b) Calculate the change in the system's electrical potential energy that results from dou- bling the area of the triangle . Check that your answer is consistent with part (a) above