2006-06-21 10:59:43 · 13 answers · asked by Sammy Hagar 3 in Science & Mathematics ➔ Physics
how fast is the speed of sound
2006-06-21 11:04:05 · update #1
5 times the speed of sound - so it would equal to a bit less than 6000 kilometres per hour.
2006-06-21 11:04:14 · answer #1 · answered by swissnick 7 · 0⤊ 0⤋
You can measure the speed of sound the same way you measure the speed of a runner, with a stopwatch on a closed track.
Find a place where you can hear a good echo, and stand a known distance from whatever the sound is reflecting off of.
Fire a starter's pistol and start the stopwatch. Stop the watch when you hear the echo.
Divide 2 times the distance (it's a round trip) by the time to get the speed.
At 21 degrees C (70°F), you should get 344 meters per second, or 1129 ft per second. At freezing, the numbers are 331 m/s or 1087 ft/s. The proper formula for the change in speed due to temperature is:
Where T is degrees Celsius. The works out to about a 0.1% change per degree Fahrenheit.
The Speed of sound in water is 1480 m/s or 4856 ft/s. More than 3000 miles per hour.
There is a project under way to take the earth's temperature by measuring the speed of sound between the USA and Australia.
2006-06-21 11:05:13 · answer #2 · answered by salohcin73 2 · 0⤊ 0⤋
5 times the speed of sound. Since the speed of sound variates depending on the temperature, mach 5 differs as well, but for a temperature of 40 - 50 degrees Fahrenheit, mach 5 is just above 6000 km/h.
2006-06-21 12:22:51 · answer #3 · answered by User1 2 · 0⤊ 0⤋
5 times fasts than the speed of sound
2006-06-21 11:03:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1. Mach 5 is 5 times the speed of sound as measured at sea level.
2. Unlike the speed of light, which is constant, the speed of sound vaies by temperature and air pressure. Sound is slower at high altitudes where air pressure is lower, and much faster under water than in the air. This is the same reason that water boils at lower temps at high altitude, there is less air pressure. Water boils at 212 F at sea level, but at 204 F in Denver Co.
2006-06-21 11:17:05 · answer #5 · answered by brooks163 3 · 0⤊ 0⤋
5 times the speed of sound.
2006-06-21 16:27:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The Mach number is commonly used both with objects travelling at high speed in a fluid, and with high-speed fluid flows inside channels such as nozzles, diffusers or wind tunnels. As it is defined as a ratio of two speeds, it is a dimensionless number. At a temperature of 15 degrees Celsius, Mach 1 is 1,225 km·h-1 (761.2 mph) in the atmosphere. The mach number is not a constant, it is temperature dependent.
or
3806 mph or 6125 kph
2006-06-21 11:06:27 · answer #7 · answered by koblas 2 · 0⤊ 0⤋
Mach 1 = 761 MPH (speed of sound) give or take
Mach 5 = 3805 MPH....in other words, really freaking fast
2006-06-21 11:10:31 · answer #8 · answered by Anonymous · 0⤊ 0⤋
the speed of sound is around 3000 mph so mach 5 is about 15000 mph
2006-06-21 11:06:09 · answer #9 · answered by Anonymous · 0⤊ 1⤋
SMOKIN'
5 times the speed of sound
2006-06-21 11:02:50 · answer #10 · answered by Black Fedora 6 · 0⤊ 0⤋