and also state what is one knot?
2006-09-15 02:01:45 · 22 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Speed of "Light" :The speed of light depends on the medium through which the light travels. In empty space, the speed is 186,000 (1.86 X 105) miles per second. It is almost the same in air. In water, it slows down to approximately 140,000 (1.4 X 105) miles per second. In glass, the speed of light is 124,000 (1.24 X 105) miles per second. In other words, the speed of light decreases as the density of the substance through which the light passes increases.
Speed of "Sound":The speed of sound through air is about 340 meters per second. (The speed of sound in water is about 4 times faster than this).
2006-09-15 02:19:09 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Speed Of Light And Sound
2016-12-29 18:45:36 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Speed Of Sound And Light
2016-11-15 09:36:06 · answer #3 · answered by gremer 4 · 0⤊ 0⤋
Depends on the medium.
The oft-quoted value for the speed of light (c = 3*10^8 m/s) is the speed of light *in a vacuum*. The speed in air is slightly less. And less again in water. And less again in glass.
Same goes for sound. The speed of sound depends entirely on the medium, namely the density and pressure.
2006-09-15 02:23:18 · answer #4 · answered by Morgy 4 · 0⤊ 0⤋
Sound is relative when comparing different planets (atmosphere)
Earth 1100 feet per second. See the lightning then count the seconds before you hear the thunder to find the distance.
Light on the other hand is a universal constant
c=186,000 miles per second.
Knot =A nautical measure of speed, approximately 1.5 miles per hour.
2006-09-15 02:27:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I don't know exactly what the speed of sound is (I think it is 340 m/s?), but the speed of light is about 3.0 x 10^8 m/s.
2006-09-15 02:03:47 · answer #6 · answered by Ϡ 3 · 0⤊ 0⤋
The speed of light is 186,000 miles per second. The speed of sound is 760 mph at sea level. For some reason Mach 1 is 660 mph.
2006-09-15 08:50:32 · answer #7 · answered by Dan C 2 · 0⤊ 1⤋
The speed of sound in air is 761 miles per hour, but it varies with temperature.
The speed of light is 186,000 miles a second.
A knot is a nautical mile per hour. A nautical mile is 6,080 feet as compared to 5,280 feet for a regular (statute) mile.
2006-09-15 02:13:31 · answer #8 · answered by campbelp2002 7 · 0⤊ 0⤋
Under normal atmospheric conditions, the speed of sound is 340 m/s which is also called 1 MACH.
The speed of light in a vacuum is an important physical constant denoted by the letter c In metric units, c is exactly 299,792,458 metres per second (or 1,079,252,848.8 km/h). speed of light - one metre is the distance light travels in a vacuum in 1/299,792,458 of a second.
2006-09-15 03:01:00 · answer #9 · answered by Snehal S 2 · 1⤊ 0⤋
At sea level, at a temperature of 15 °C (59 °F) and under normal atmospheric conditions, the speed of sound is 340 m.s-1 (1225 km.h-1 or 761 mph).
the speed of light is approximately 186,282.397 miles per second, or 670,616,629.384 miles per hour.
2006-09-15 02:06:56 · answer #10 · answered by aggravatingprick 4 · 0⤊ 0⤋