Suppose you have two identical capacitors. You connect the first capacitor to a battery that has a voltage of 28.3 volts, and you connect the second capacitor to a battery that has a voltage of 14.9 volts. What is the ratio of the energies stored in the capacitors: Ecap1/Ecap2

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?