Question

The number of waves per second is called _________________

Answer 1

Answer:

Wavelength is also measured in metres ( ) - it is a length after all. The frequency ( ) of a wave is the number of waves passing a point in a certain time. We normally use a time of one second, so this gives frequency the unit hertz ( ), since one hertz is equal to one wave per second.

Explanation:

Answer 2

Answer:

hertz (hz) is the number of waves per second.