A coil with 50 turns and a radius of 7 cm is placed in a 5 mT external magnetic field, ortiented such that the field is directed straight through the coil. The coil begins to rotate, while simultaneously the magnetic field strength begins to decrease. If the coil rotates until its normal is at a 60° angle from the magnetic field in 2s, and the magnetic field strength drops to 10 mT in the same 2s, what is the average emf induced in the coil during this process?
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