Acheetah can run at a maximum speed 104 km/h and a gazelle can run at a maximum speed of 74.7 km/h. if both animals are running at full speed, with the gazelle 55 m ahead, how long before the cheetah catches its prey?

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?