Question

these are sound waves. which one will have the higher pitch? they are the same pitch but different volumes

Explanation:

Pitch is related to the frequency of sound waves (number of oscillations per unit time). In the given graphs, both waves complete one oscillation (cycle) over the same time (since the horizontal axis - time - span is the same). Frequency ($f=\frac{1}{T}$, where $T$ is period) is equal when the period (time for one cycle) is equal. So their pitches (related to frequency) are the same, but amplitude (height of wave, related to volume) differs.

Answer:

They are the same pitch but different volumes