# Speed of sound

The speed of sound is the distance traveled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (1,126 ft/s). This is 1,236 kilometres per hour (768 mph), or about one kilometer in three seconds.

In solids, the speed of sound is dependent on the medium's elastic properties and its density. For instance, in a metal, the speed of sound will be higher than in a liquid or a gas. In a gas, the speed of sound will be lower than in a solid.

The speed of sound in a medium is related to the speed of sound in air by the following equation:

v = v_0 sqrt{frac{rho}{rho_0}}

where v is the speed of sound in the medium, v_0 is the speed of sound in air, ρ is the density of the medium, and ρ_0 is the density of air.

The speed of sound is a function of temperature in both gases and solids. In general, the speed of sound increases with increasing temperature. In gases, the speed of sound is also a function of the gas's molecular weight. Heavier molecules travel more slowly than lighter molecules.

The speed of sound is used to determine the Mach number, which is the

What causes the speed of sound? The speed of sound is caused by the vibration of particles in a medium. The particles in the medium vibrate in response to the disturbance caused by the sound wave. The speed of sound is determined by the properties of the medium, such as the stiffness of the medium and the mass of the particles.

What is the speed of sound wavelength? The speed of sound is the speed at which sound waves propagate through a medium. The speed of sound depends on the properties of the medium, such as the density and compressibility of the medium. The speed of sound in air is about 343 m/s. The speed of sound in water is about 1450 m/s. Can a human go Mach 10? Yes, a human can go Mach 10. However, they would need to be in an extremely aerodynamic vehicle, such as a rocket-powered car or plane. The human body is not designed to withstand the high speeds and G-forces associated with Mach 10 travel. Is Mach 9 possible? Yes, Mach 9 is possible. In fact, Mach 9 is the unofficial name for the USB 3.0 specification, which is a subset of the USB 3.1 specification. The USB 3.0 specification was released in 2008, and the USB 3.1 specification was released in 2013. How fast is sound in water? Sound travels faster in water than in air because water is a denser medium than air. The speed of sound in water is approximately 1,500 meters per second, while the speed of sound in air is only about 340 meters per second.