Aboat floats in a lake. when the boat moves the force of resistance is proportional to the velocity of the boat. initially the boat is at rest. a person walks from the stern to the bow of the boat. what will be the position of the boat long time after the person stopped moving?

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?