As shown in the figure above, a ball with a mass of 0.180 g and positive charge of q=31.0 mC is suspended on a string of negligible mass in a uniform electric field. We observe that the ball hangs at an angle of q=16.0o from the vertical. What is the magnitude of the electric field? so i drew a free body diagram and now i am going to calcuate the forces in the x and y directions to see what E is. since the ball is stationary Fx=0=E-Tsin(16)+q so E=Tsine(16)+q now i solve for T by finding the forces acting in the y direction Fy=0=Tcos(16)-mg so T=mg/cos(16)...so i substitute that into Fx and now E=(mg/cos(16))sin(16)+q what am i doing wrong?