Electrical generator which operates using a magnetic field. It is the beginning of modern dynamos.
Answer:
The girl will move with constant velocity
Explanation:
If after a certain time t_0 the velocity of the girl is v_0 =gt_0 and the upward force on the girl due to rope is mg ,where g is gravitational acceleration. Then the girl will move down with the constant velocity v_0 .
The girl will move with constant velocity,as explained above.
Sun fives off both of them
Particles become farther apart from each other in the change of state between liquid and gas.
Hope that helped =)