If you stay on or near the surface of Earth, then the acceleration due to gravity
is constant. It's 9.807 meters per second squared. (rounded)
This would be known to be determined by its sound wave which would be the amplitude. The pitch of sound would actually be a little differenr in this matter. But know that we know and understand the sound wave of the pitch of sound, we know that this is done by amplitude.
C. protons dont circle the nucleus of an atom