A ski hill is angled 20° above the horizontal. If a skier starts from rest at the top of the hill, how fast will she be traveling after she has traveled 62 m 62 ⁢ m down the slope? Assume that friction is negligible.

Which of the following represents an upside-down image?

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?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.