If the potential across two parallel plates, separated by 4.0 cm, is 15.0 v, what is the electric field strength in volts per meter?

Which subatomic particle has a negative charge

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.