The length of a pendulum is 1.5 meters. What is the period of motion for the pendulum ? ( use 3 for pi and 10 for g)

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?

The particles that are found in the nucleus of an atom are

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?