To avoid tailgating, and avoid a rear-end collision, you should give yourself a gap of how many seconds behind the car in front of you?

Blank liquids and gases exert a buoyant force on objects placed in them

Difference between series and parallel circuits

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?