A mother and daughter are playing catch, as seen in the image below. At which point during the balls flight path does it have the most potential energy?

O When it leaves the mother's hand.
O When it leaves the little girls hand.
O The moment before either person catches the ball.
O The moment the ball is the highest in the air

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?