At each corner of a square of side there are point charges of magnitude Q, 20. 3Q, and 4Q (Figure 1). Figure y 4Q X 1 1 20 1 3Q < 1 of 1 > Part A Determine the magnitude of the force on the charge 20 Express your answer in terms of Coulomb's constant k, Q, and I. Express your answer using two significant figures. F = Submit Part B X Incorrect; Try Again; 2 attempts remaining 8= Determine the direction of the force on the charge 20 Express your answer using two significant figures. 9 Previous Answers Request Answer Submit Provide Feedback Request Answer C ? FIBA ? G counterclockwise from the positive z axis