1. Which of the following are examples of acceleration? Circle all that apply.

A. A car slowing down from 50 miles per hour to 20 miles per hour.

B. A car turning a corner

C. A car starting up again after stopping.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

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 example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor