The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or one kilometre in 2.91 s or one mile in 4.69 s. It depends strongly on … See more Sir Isaac Newton's 1687 Principia includes a computation of the speed of sound in air as 979 feet per second (298 m/s). This is too low by about 15%. The discrepancy is due primarily to neglecting the (then unknown) effect of … See more The transmission of sound can be illustrated by using a model consisting of an array of spherical objects interconnected by springs. In real material terms, the spheres represent the material's molecules and the springs represent the See more The speed of sound is variable and depends on the properties of the substance through which the wave is travelling. In solids, the speed of transverse (or … See more Speed of sound in ideal gases and air For an ideal gas, K (the bulk modulus in equations above, equivalent to C, the coefficient of stiffness in solids) is given by See more The speed of sound in mathematical notation is conventionally represented by c, from the Latin celeritas meaning "velocity". For fluids in general, the speed of sound c is given by the Newton–Laplace equation: See more In the Earth's atmosphere, the chief factor affecting the speed of sound is the temperature. For a given ideal gas with constant heat capacity and composition, the speed of sound is dependent solely upon temperature; see § Details below. In such an ideal case, … See more General physical considerations The medium in which a sound wave is travelling does not always respond adiabatically, and as a result, the speed of sound can vary with frequency. The limitations of the concept of speed of sound due to … See more WebIf a sound wave (sonic pulse) travels at a right angle to these layers, as in depth sounding, no refraction occurs; however, the speed changes continuously with depth, and an average sound speed for the entire water column must be used to determine the depth of water. Variations in the speed of sound cause sound waves to refract when they ...
Speed of sound Description & Examples Britannica
Webb. waves have a speed that is dependent only upon the properties of the medium. c. is like all waves; it is able to bend into the regions of space behind obstacles. d. is able to reflect off fixed ends and interfere with incident waves e. vibrates longitudinally; the longitudinal movement of air produces pressure fluctuations. Pitch and Frequency WebThe speed of sound Sonic booms When an airplane flies at or above the speed of sound, air molecules cannot move out of the way of the airplane fast enough, so the pressure waves combine to generate a large shockwave, which people on the ground hear as a sonic boom. What is a sonic boom? Watch on Quieting the boom is cigna dental good insurance
17.2: Speed of Sound, Frequency, and Wavelength
WebThere are two types of waves, transverse and longitudinal (sometimes called pressure or compression waves). When people think of waves, they often think of transverse waves. … WebApr 9, 2024 · The term “speed of sound” refers to the velocity of sound waves in an elastic medium. Hence, the speed of sound defines how quickly it can propagate in some medium.The speed of sound in a given medium is determined by its elasticity and density. The greater the elasticity and the lower the mass, the greater the sound speed. WebWe can find the speed of sound by looking at the speed of this compressed region as it travels through the medium. In non-humid air at 20 degrees Celsius, the speed of sound is … is cigna better than blue cross blue shield