Question

Which of these best describes frequency?
the loudness of a sound
the energy that bounces off an object
the number of vibrations per unit time
the bending of light as it passes through substances

Answer 1

will give medal

Answer 2

I believe it would be c - the number of vibrations per unit of time.
For example, if you could see the sound waves for something with a high frequency, you would see more waves pass by a certain point in one unit of time (a minute) compared to something with low frequency.

Answer 3

thanks its was right

Answer 4

youre welcome :)