An electric generator is when a magnet is rotated through a coil of wire to produce an electric current.
Answer:

Explanation:
initially the merry go round is at rest
after 6.73 s the merry go round will accelerates to 20 rpm
so final angular speed is given as



so final tangential speed is given as


now average acceleration of the girl is given as



time=distance/speed
1.6/100 secs = 0.016secs=16millisecs