The figure shows three circular arcs centered at the origin of a coordinate system. On each arc, the uniformly distributed charge is given in terms of Q = 3.43 UC. The radii are given in terms of R = 9.22 cm. What are the (a) magnitude and (b) direction (relative to the positive x direction) of the net electric field at the origin due to the arcs? +90 3R -40 2R R (a) Number Units (b) Number i Units