If the average kinetic energy of substance A's molecules is higher than the average kinetic energy of substance B's molecules: a. Thermal energy will be transferred from substance B to substance A. b. The temperature of substance B will be higher than substance A. c. Heat will transfer from substance A to substance B. d. The temperature of substance A is lower than that of substance B.

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?