You are driving on a highway and are following a large truck. You should A: Move partly into the lane to your left, so the truck driver can see you.
B: Stay well back, in a place where the truck driver can see you in their side mirrors,
C: Flash your headlights so the truck driver knows you are there,

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?