Question

why can the sound not travel through out vacuum describe an experiment in support of our answer ​

Answer 1

Answer:

After some time when no air is left within the jar, no sound is heard. However, the hammer of the electric bell can be still seen striking the gong. The reason is that when no air is left in the jar, the sound does not reach us, although the bell is still vibrating, Thus, sound cannot travel through a vacuum.