Three charges are fixed to an xy coordinate system. A charge of +22 C is on the y axis at y = +3.7 m. A charge of -13 C is at the origin. Lastly, a charge of +49 C is on the x axis at x = +3.7 m. Determine (a) the magnitude and (b) direction of the net electrostatic force on the charge at x = +3.7 m. Specify the direction as a positive angle relative to the +x axis.