It depends Changes in pressure or temporary can change the speed of sound Also, d medium in which sound is travelling. Sound travels fastest in sound faster in liquid. 330ms^-1 is the speed of sound in air. read more
Most modern guns shoot a bullet with a muzzle velocity faster than the speed of sound; some high-velocity bullets exit the muzzle at more than four times the speed of sound. A few kinds of missiles, including many cruise missiles, can travel faster than sound. read more
These types of superluminal phenomena, Robertson et al. explain, violate neither causality nor special relativity, nor do they enable information to travel faster than c. In fact, theoretical work had predicted that the superluminal speed of the group velocity of sound waves should exist. read more
The speed of sound in a medium depends largely on the density and the compressibility of the material. The denser the material, the faster sound travels. The more compressible a material is, the slower sound travels. In general,sound will travel through a material faster if you increase density, decrease compressibility, or both. read more
Yes if you want to make a nornal sound traveling faster than the speed of sound by changing its format to another thing else, such as light (radio wave is light, electromagnetic waves) similar to make a call with a mobile phone. read more
The main thing is that when you travel faster than the speed of sound, the doppler shift can’t keep up - you’re faster than sound waves you emitted going in the same direction as you!! A cone therefore forms around you in the direction you’re going, a mach cone. This is the source of sonic booms. read more
Most modern guns shoot a bullet with a muzzle velocity faster than the speed of sound; some high-velocity bullets exit the muzzle at more than four times the speed of sound. A few kinds of missiles, including many cruise missiles, can travel faster than sound. Light travels much faster than sound. read more