A sound wave moves from a medium in one state into the same medium in a different state. As a result, the wave speed changes from about $300\,\text{m s}^{-1}$ to about $3000\,\text{m s}^{-1}$. Which two states is the sound wave passing between?
- Agas to solid
- Bliquid to gas
- Cliquid to solid
- Dsolid to liquid