e = gt m o mm mee n Chapter 18 Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 5.5 uC, and the lengths of the sides of the triangle are 2.5 cm. Calculate the magnitude of the net force that each charge experiences. B 2 For this question you should have three answers, in other words, what is Fa, Fg, Fc? Chapter 19 The drawing shows a square, each side of which has a length of L = 0.250 m. Two different positive charges g1 and g2 are fixed at the corners of the square. Find the electric potential energy of a third charge g3 = -6.00 x 107 C placed at corner A and then at corner B. B A q1=+150x10C ,=+4.00x10C In other words, what is EPExand EPE