A rectangle measuring 30.0cm by 40.0cm is located inside a region of a spatially uniform magnetic field of 1.70T , with the field perpendicular to the plane of the coil (the figure ). The coil is pulled out at a steady rate of 2.00 cm/s traveling perpendicular to the field lines. The region of the field ends abruptly as shown. a) Find the emf induced in this coil when it is partly inside the field Please explain in plain english as well in the math I am lost