One solenoid is centered inside another. The outer one has a length of  53.0 cm and contains 6770 coils, while the coaxial inner solenoid is 5.00 cm long and 0.130 cm in diameter and contains 20.0 coils. The current in the outer solenoid is changing at 35.5 A/s

part A- What is the mutual inductance of these solenoids? Express your answer in microhenrys.

part B- Find the emf induced in the inner solenoid. Express your answer in volts.

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