The first model of the atom was developed through scientific experimentation and data analysis with water vapor and gases. observation of the light emitted by elements when they are heated. thinking about the smallest particles of matter without experimenting. analyzing the effects of a magnet on the path of a cathode ray.

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?