What must be true about an object's acceleration as it is traveling in the positive direction and slowing down?
a. the object has no acceleration
b. it negative acceleration is constant
c. its acceleration is the same as its velocity
d. the object is accelerating in the negative direction

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?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

What happens to an isotope during radioactive decay?