- published: 27 May 2011
- views: 53097950
The speed of sound is the distance traveled per unit time by a sound wave propagating through an elastic medium. In dry air at 20 °C, the speed of sound is 343.2 metres per second (1,126 ft/s). This is 1,236 kilometres per hour (768 mph; 667 kn), or a kilometre in 2.914 s or a mile in 4.689 s.
The speed of sound in an ideal gas is independent of frequency, but does vary slightly with frequency in a real gas. It is proportional to the square root of the absolute temperature, but is independent of pressure or density for a given ideal gas. The speed of sound in air varies slightly with pressure only because air is not quite an ideal gas. Although, in the case of gas only the speed of sound is expressed in terms of a ratio of both density and pressure, these quantities cancel in ideal gases at any given temperature, composition, and heat capacity. This leads to a velocity formula for ideal gases which includes only the latter independent variables.
In common everyday speech, speed of sound refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance. Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), as in air at 20 °C. Sound waves in solids are composed of compression waves (just as in gases and liquids), but there is also a different type of sound wave called a shear wave, which occurs only in solids. These different types of waves in solids usually travel at different speeds, as exhibited in seismology. The speed of a compression sound wave in solids is determined by the medium's compressibility, shear modulus and density. The speed of shear waves is determined only by the solid material's shear modulus and density.
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iTunes: http://umusic.ly/speedofsounditunes Facebook: https://www.facebook.com/DeepcentralOfficial Instagram http://instagram.com/deepcentralmusic Twitter: https://twitter.com/DeepcentralLive Contact Artist: booking@umusic.ro Music video by Deepcentral performing Speed of Sound. (C) 2011 Universal Music Romania
made with adobe after effects i don't own the music please like the vid
"To use this video in a commercial player, advertising or in broadcasts, please email Viral Spiral(A Rightster Company) : licensing@rightster.com” An F/A-18C breaks the speed of sound, leaving behind the tell tale and infamous "Sonic Boom". Model: F/A-18C Hornet Developed from: McDonnell Douglas National origin: United States Manufacturer: McDonnell Douglas / Boeing Northrop Primary users: United States Navy, United States Marine Corps, Royal Australian Air Force, Spanish Air Force Unit cost: US$29–57 million (2006)
Sound travels at about 760 miles per hour, or 340 meters per second and about 661 knots on an average day at sea level. And sometimes, you can almost see it. Going close to that speed through air can cause some unusual visual effects. This compiled footage includes F-14s, standard and Blue Angels F-18s, plus the SR-71 and an Atlas Rocket launch. AVweb contacted sources at NASA to research the phenomena. Video researched, edited, narrated by Glenn Pew http://www.glennpew.com/ Clip Credit: 0:14-0:20 Andy Painter; watch the full-length video here: http://www.youtube.com/watch?v=Igy_MYJpVcQ&feature;=share&list;=PLDB1FBF929D77A8C4 F-18 credit at 1:05 by Jorg Amann
How fast does sound actually travel? Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/sound-topic/v/relative-speed-of-sound-in-solids-liquids-and-gases?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/sound-topic/v/sound-properties-amplitude-period-frequency-wavelength?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'...
Click here to buy Mylo Xyloto http://links.emi.com/coldplayMX Music video by Coldplay performing Speed Of Sound (Live From Austin City Limits).
SUBSCRIBE TO OUR CHANNEL: http://bit.ly/1F2ByA1 There's a lot of "Boomerang" roller coasters in the world...but this one is pretty awesome! Speed of Sound may very well be the BEST Vekoma Boomerang ever made! The music is fantastic! Check out this ride at Walibi Holland!
Hypersonic X-51A X51a Wave Rider - u.s technology for future combat and commercial use (speed of sound - 1235km/hr) (speed of rifle bullet- 2,600km/hr)
I've followed traces of the steps before
I've passed away now, into peaceful war
Nearing now I see I have longed to be
Taken by the hand of the faceless one who stands
Now I undergo the change of life foretold
Growing on to me and now I soon shall be
Soaring blindly in a race through borrowed time
And beside me a race of souls who ride
Growing on me the wings of flight in empty space
Is it terror propelling us into the chase
I'm timeless bound from the speed of sound
And the move that's endless all around
And with this space I share all the souls who bare
Heavy weight turning loose falling to the ground
As the sun falls dark we have made our mark
It captures me to know I have doused the final spark
It's never ending our lungs have burst with might
Souls of this speed spectors soar through the night
Into stardom then beyond who knows?