A 10-turn square coil of wire lies in the xy-plane. A uniform magnetic field of magnitude 2.0 T oriented in the negative z-direction changes steadily to a magnitude of 6.0 T oriented in the positive Z- direction. This change in the magnetic field takes 3s. If the square coil has sides of length 0.3 m, what is the magnitude of the induced emf in the coil during this time?