A12 kg barrel is pulled up by a rope. the barrel accelerates at 1.2 m/s2. find the force exerted by the rope. show all your work.

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?

Which statement best explains why the overall charge on an atom is zero?

If a nissan titan has a mass of 2,300 kilograms how many grams is that