The magnetic field in the region between the horizontal rails in the figure below is given by B = Bo cos (wt - ky) 2. The rails are a distance a apart. The bar on the right sits across the rails and moves in the ŷ direction with a velocity v. x y B E y(t) = y' — ν α (a) In words, describe what are the two contributions to the emf, e, as measured at the left end of the rails? (b) Calculate the emf, e, as measured at the left end of the rails.

The magnetic field in the region between the horizontal rails in the figure below is given by B = Bo cos (wt - ky) 2. The rails are a distance a apart. The bar on the right sits across the rails and moves in the ŷ direction with a velocity v. x y B E y(t) = y' — ν α (a) In words, describe what are the two contributions to the emf, e, as measured at the left end of the rails? (b) Calculate the emf, e, as measured at the left end of the rails.