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Two square coils (1 and 2) of different size but with the same number of turns and carrying the same current are placed in different magnetic fields but experience the same maximum torque. If each side of coil 1 is 4.50 cm and it rotates in a 0.17-T field, determine the length of each side of coil 2 if it rotates in a magnetic field of 0.42 T.