Acar accelerates at 2 meters per second per second. assuming the car starts from rest, how much time does it need to accelerate to a speed of 30 m/s?

Asample of a gaseous substance changes into a liquid

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

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?