A pop!
A cork usually makes a soft popping sound when it is removed from a bottle.
When opened, a bottle of sparkling wine makes a popping sound as the cork is forced out of the neck by high pressure escaping the bottle.
Sound travels slower in cork compared to air because cork is a denser material, which causes sound waves to have to travel through the material's molecules at a slower speed. This increased density and the material's ability to absorb sound energy contribute to the slower speed of sound in cork.
The principal component of cork is suberin.
The speed of sound through cork is approximately 800 to 1,200 meters per second, depending on factors such as temperature and the density of the cork. This speed is relatively slower compared to sound traveling through materials like metals or water, due to cork's porous and lightweight structure. Sound propagation in cork is influenced by its unique cellular composition, which affects how vibrations move through the material.
Cork is a natural sound absorbent material and is not a good conductor of sound. It has the ability to dampen vibrations and reduce noise levels, making it a popular choice for soundproofing applications.
If you mean what sound to they make when being removed from a bottle, the sound of the cork rubbing on the sides of the mouth of the bottle is a high squeaky sound. If you mean what sound is heard when the cork is finally removed from a bottle, that is what we call a pop.
Buoyancy
No. The denser the material, the faster sound moves through it.
Transferred Energy
The sound results from the difference in air pressure in the bottle as the cork is removed.
Sound travels more slowly in cork than in steel because cork is less dense than steel and has more air pockets, which slows down the transmission of sound waves. Steel is denser and has a more rigid structure, allowing sound waves to travel faster through it.