Does physics cover sound? If so, why does sound not have units in the SI system, or how would we measure sounds and frequency? I guess it's debatable, but why isn't it standard practice in physics?
[Physics] Is sound considered a subtopic of physics? What are the SI units of sound
acousticsfrequencysi-units
Best Answer
Yes, physics covers sound.
The SI unit of frequency is hertz ($\mathrm{Hz}$), which is the same as $\mathrm{s^{-1}}$. The intensity of sound may be measured in pascals ($\mathrm{Pa}$), or in decibels ($\mathrm{dB}$) relative to a standard reference level. Pascals are the official SI unit, but decibels, which are not an SI unit, are commonly used in applications and are accepted by many standards bodies.