A bat produces a sound at 17,250Hz and wavelength 0.019m. What is
the speed of the sound?

Use the table to answer question 22 23 and 24.

What is work? how much work is done to move an object 0 meters?

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?