A1500 kg car is moving at a speed of 10 m / s. what is the car's kinetic energy

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

When you turn on a battery-operated device, an electrical circuit is

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is