An electric winch uses 3.78x10^4 J of electrical energy to pull a boat on a boat trailer up a ramp out of a lake. If the total mass of the boat and trailer is 635 kg, and the winch pulls them a vertical distance of 3.2 m, what is the efficiency of the winch in lifting the boat and trailer? *

In physics the desire of an object to keep doing what it is doing is termed?

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

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?