A 2.90-m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 0.680 m/s. The Earth’s magnetic field in this region is of magnitude 50.0 ut and is directed northward and 53.0° below the horizontal. (a) Calculate the magnitude of the induced emf between the ends of the wire. μν (b) Determine which end is positive. O the east end o the west end O both O neither