A mass of 10 kg is lifted a distance of 50 m. How much potential energy idoes it possess? (PE = MASS x GRAVITY x HEIGHT)

Remember that GRAVITY is represented by: g = 9.8 m/s2.
Remember that ENERGY is measured in JOULES!
Your

500 Joules

98 Joules

4,900 Joules

980 Joules

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?