Total Questions: 43
The approximate speed of sound in distilled water at 25°C (77°F) is 1498 meters per second (m/s).
This is significantly faster than the speed of sound in air because water is much denser and less compressible than air.
In fluid mechanics, the Mach number will be 1 if the speed of the object is equal to the speed of sound in the surrounding fluid.
The Mach number (M) is defined as the ratio of the flow speed past a boundary to the local speed of sound. Mathematically:
where: (v) is the local flow velocity (the speed of the object relative to the fluid). (a) is the local speed of sound in the fluid medium.
Therefore, when (v = a), the Mach number (M) becomes 1.
This condition is often referred to as sonic speed.
