A 25.0-cm-long metal rod lies in the xy-plane and makes an angle of 36.90 with the positive x-axis and an angle of 53.10 with the positive y-axis. The rod is moving in the + x- direction with a speed of 4.20mfs. The rod is in a uniform magnetic field B = (0.120T) i (0.220 T)j - (0.0900 T)k.
(a) What is the magnitude of the emf induced in the rod?
(b) Indicate in a sketch which end of the rod is at higher potential.