Sound waves can travel through solids, liquids and gases. When an experiment is conducted for sound waves transmission it is observed initially sound travels through air in the bell jar, then through the walls of the bell jar into the air outside and then reaches our ear. When air is removed from the bell jar no sound reaches its wall, therefore, we cannot hear any sound.
Looking out for more help on Instantaneous Speed Definition in Physics by visiting listed websites.
A sound produced ata certain distance reaches us after certain time. This is because the sound travels with a finite velocity in air. However, a sound travels with different velocities in different media. |In general, sound travelsfaster in solids and liquids than in air. For example, the velocity of sound in iron is about 5000 m/s, in water about 1500 m/s and in air about 340m/s.
The velocity of sound in air depends on the following factors.
Speed of sound waves
However,the velocity of sound in air is independent of the changes in atmospheric pressure. In solids and in liquids the velocity of sound depends on the elasticity and density of the medium.
It should be noted that speed of sound depends only on the medium. For Ex: Sound waves cannot travels in vaccum. It is independent of all other factors. Denser the medium is, lesser is the speed of sound.
Sound waves Shown in Black and white