Anything that moves up and down or back and forth in a rhythmic way is vibrating true false

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?