15. Four point charges of equal magnitude Q = 75 nC are placed on the corners of a rectangle of +Q sides D1 = 29 cm and D2 = 11 cm. The charges on the left side of the rectangle are positive D2 while the charges on the right side of the +Q -Q rectangle are negative. Use a coordinate system where the positive y-direction is up D1 24 and the positive x-direction is to the right. a. Sketch a free-body diagram for the charge on the lower left-hand corner of the rectangle? b. Set up the equation(s) needed to find the horizontal component of misley the force on the charge on lower left-hand corner. c. Set up the equation(s) needed to find the vertical component of the force on the charge on lower left-hand corner. d. In terms of your answers to b and c, how would you find the angle from the positive x-axis of the force on the charge on the lower left- hand corner? Scan to ask