Which term describes the process of transferring charge without the direct contact

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n