Lava from a hot spot flowed out of a fissure at the rate of 0.8 km/h. Use the table to answer the question. Time (hours) | Distance (km)
12 | 9.6
___ | 24
45 | ___

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?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Does heating a metal wire increase or decrease its electrical resistance? why?