I have a question concerning echos.
2007-01-24 01:00:53 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The speed of sound is a term used to describe the speed of sound waves passing through an elastic medium. The speed varies with the medium employed (for example, sound waves move faster through water than through air), as well as with the properties of the medium, especially temperature. The term is commonly used to refer specifically to the speed of sound in air. At sea level, at a temperature of 21 °C (70 °F) and under normal atmospheric conditions, the speed of sound is 344 m/s (761mph).
The speed of sound is sometimes used in describing the nature of substances (see the article on sodium).
In conventional use and in scientific literature sound velocity, v, and sound speed, c, are used synonymously and should not be confused with sound particle velocity (also symbolized as v), which is the velocity of the individual particles.
The speed varies depending on atmospheric conditions; the most important factor is the temperature. Humidity has little effect on the speed of sound, nor does air pressure per se. Air pressure has no effect at all in an ideal gas approximation. This is because pressure and density both contribute to sound velocity equally, and in an ideal gas the two effects cancel out, leaving only the effect of temperature. Sound usually travels more slowly with greater altitude, due to reduced temperature.
2007-01-24 01:19:06 · answer #1 · answered by Vinay 2 · 0⤊ 0⤋
1116.13 ft/sec
How far away is lightning? Measure time from flash to sound of thunder. Every 4.73 seconds is 1 mile away. Most people round off to 5.0 seconds. Easier.
So, if you hear thunder 2 seconds after the flash then the lightning was about .4 mile away.
2016-08-02 11:52:42 · answer #2 · answered by Tom M 1 · 1⤊ 0⤋
1100 fps
2017-02-15 13:06:54 · answer #3 · answered by Ralph B 2 · 0⤊ 0⤋
1126 fps
2015-11-29 10:29:01 · answer #4 · answered by cb 1 · 0⤊ 0⤋
It is around 700 miles per hour, but varies with temperature.
2007-01-24 02:09:57 · answer #5 · answered by CLICKHEREx 5 · 0⤊ 0⤋
1085 fps
2014-09-08 14:45:02 · answer #6 · answered by Tim Strobel 1 · 1⤊ 0⤋
Around 1,000 fps. Sorry do not know precisely, but that's close.
2007-01-24 01:04:00 · answer #7 · answered by All hat 7 · 0⤊ 1⤋
335 metres/sec = 1099.08136 feet/sec
2007-01-24 02:02:35 · answer #8 · answered by jaliya m 2 · 0⤊ 1⤋
1116.732 FPS at 60 degrees F, dry air at 29.92
SQR(F + 459.4 R) * 49.0002 constant
2015-08-29 02:40:55 · answer #9 · answered by Rick 1 · 0⤊ 1⤋
1100 ft/sec
2007-01-24 01:04:02 · answer #10 · answered by Magick Kitty 7 · 0⤊ 1⤋