What is a wave frequency? a. the number of waves that pass a fixed point in a fixed period of time b. the speed that a wave is passed from particle to particle through a medium c. the loudness of a wave as it travels though the air d. the height of a wave between peak and trough

A. the number of waves that pass a fixed point in a fixed period of time

Explanation:

A wave is a disturbance that travels in a medium. Frequency of a wave can be defined as the number of waves passing through a fixed time per second. It is measured in Hertz. Wavelength is the distance between two crests or troughs. Amplitude is half height of a wave between peak and trough.

Thus, option A is correct.

f=ma newton's second law 7x8=56n

graph question answered .. you think better when you are relaxed and happy