Solve the following problems. Show your solution. USE GRESA METHOD for solution. 1.Two charges, of 1=+ 3.50 and 2= 4.50 are 0.400 m apart. Where along the line joining them will net electric field be zero? Note: = 0 and 1 and 2 are opposite. 2. Four point charges are positioned as such: A(0,1), B(2,1), C(0,0), D(2,0). Charge A = -3 microcoulombs, Charge B =3 microcoulombs, C = 2microcoulombs, and D =-2 microcoulombs. What is the net electric field experienced at the origin.