Short answer: About 33.3 picoseconds (in vacuum).
The speed of light in a vacuum is 2.9979 x 10^8 meters per second. Written in centimeters, this is 29,979,000,000 centimeters per second.
That is just almost 30 Billion centimeters per second. So, in one-Billionth of a second light travels 30 centimeters (in vacuum). (More precisely, it travels 29.979 cm per billionth of a second, but 30 cm is a very good approximation.)
Okay, now for the 1 cm time: divide one-billionth of a second by 30, and we get 33.3 Trillionths of a second (3.33 x 10^-11 sec, or 33.3 picoseconds.)
If the light is traveling in some medium other than vacuum, then it goes at a slower speed. We typically use 'c' to represent the speed of light in a vacuum. If the light travels at speed 'v' in a medium, then we call the Refractive Index of the medium n, where n = c/v. For example, pure water has n = 1.33, common glass has n = 1.5.
[The refractive index depends upon the wavelength of the light. Germanium crystal has the highest refractive index among common, natural material; it is opaque to visible light but in the mid infrared it has n = 4.]
At 20 degrees Celsius sound travels at 343 m/s (because: speed of sound= 331+ temperature*0.6). This means that it takes 1 second for sound to travel 34300 centimeters. If you take the inverse of this (1/34300=0.000029) then you'll see that it takes 0.000029 seconds for sound to travel 1 cm. You then multiply this number by the speed of sound (3e8m/s), and you have your answer: 8746.36 meters.
Speed of sound = 340 meters per second.
Time for one meter = 1/340 second
Speed of light = 299792458 meters per second
Distance in 1/340 second = 299,792,458 / 340 =
-- 881.7 kilometers (rounded)
-- 547.9 miles (rounded)
Speed of sound in air is c ≈ 331 + 0.6 × T.
T = Temperature in °C.
Speed of sound in air at 20°C is c ≈ 331 + 0.6 × 20 = 343 m/s.
The speed of sound is 343.2 meters a second, now you can do the math.
One thirtieth of a billionth sec
It will take 1 year, as soon as you and Albert work out how to travel at the speed of light. ;)
Yes, just like centimeter and millimeter ...
How long would it take a car to travel 87 kilometers if it were travelling at 90 kph
Light travels 9,460,730,472,580.8 Km. in one year.
take a ruler and measure it other people's are different though
It will take 1 year, as soon as you and Albert work out how to travel at the speed of light. ;)
A lightyear is the distance that light can travel in one year.
It takes light exactly one hour to travel in 1 hour.
It takes about 8 minutes.
It take the light to travel for 2 million years Actually about 100 years, maybe less.
Light take approximately 8 minute 20 seconds to travel from the sun to the earth.
It depends where you live
8 minutes
It takes Light 8 Minutes to get from the Sun to the Earth.
Just divide the speed of light by the distance.
It would take 65 years 11 months to travel to Aldebaran from Earth traversing at the speed of light.
Light travels 186,300 miles per second