What would happen if a white dwarf gained enough mass to reach the 1.4 solar-mass white dwarf limit?

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

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving