What I want to know is that the website www.wikipedia.org says that the speed of sound is 769 mph. Would this be a measured value or a given value? (Like, 60 sec/minute)
2007-04-30 06:36:30 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Of course, this is a measured value. It simply means that under a normal atmosphere, and around the sea-level, and for a standard temperature, the speed is 769 miles per hour. Thanks.
2007-04-30 06:55:15 · answer #1 · answered by Tanweera 2 · 0⤊ 0⤋
That would be the speed of sound in air at about 21 degrees. Speed of sound in a fluid is the square root of (bulk modulus/density). This is a measured value, usually based on density for the bulk modulus is fairly constant.
Usually when you specify the speed of sound the properties of the immediate environment would be mentioned as factors like temperature or pressure changes the speed of sound.
2007-05-03 10:54:03 · answer #2 · answered by ? 6 · 0⤊ 0⤋
this is a measureble value b/c the speed of sound varies by medium and temperature in that medium. At 0 degrees celcius in air the speed is 331.5m/s (meters per second)
2007-05-01 22:36:15 · answer #3 · answered by Brandon 3 · 0⤊ 0⤋
It's a given value - speed of sound is effectively constant in a given medium.
2007-04-30 13:40:12 · answer #4 · answered by Brian L 7 · 0⤊ 1⤋
another value can be obtained from the speed of sound yopu looked up (value : 330m\s in air at 0 degress celcius)
2007-04-30 14:25:06 · answer #5 · answered by Dr. Eddie 6 · 0⤊ 0⤋
don't know where they got that number? first you must specify standard temp and pressure=20 deg cent/sea level, the prob velocity is then 1140 ft / sec or about 640 Mph
. all the variables need to be accounted for...tidy physics is good physics...but what do i know?
2007-04-30 14:07:43 · answer #6 · answered by Anonymous · 0⤊ 1⤋
Measured value.....
2007-04-30 13:40:48 · answer #7 · answered by Gene 7 · 0⤊ 1⤋