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The speed of light in a vacuum is approximately how many kilometers?
Wiki User
∙ 13y ago
299 792.458 km s-1.
This is not an approximate figure - it is exactly right by definition.
If there was a tiny error it will be corrected by adjusting the meter !
Wiki User
∙ 13y ago
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What is the speed of light in a vacuum?
The speed of light in a vacuum is 186,282.397 miles per second or 670,616,629.2 miles per hour.
Why is the speed of light limited in a vacuum?
The speed of light is not limited in a vacuum - the speed of light is fastest in a vacuum. But that is what Einstein called the "Cosmic Speed Limit" - nothing can move faster than the speed of light in a vacuum, or even quite asfast.
How does the average speed of light glass compare with its speed in a vacuum?
About 2/3 its speed in a vacuum.
What is the speed of light in miles per second in a vacuum?
The speed of light is 186,000 miles per second in a vacuum.
What travels at the speed of 300000 kilometres per second?
That is approximately the speed of light (c). In metric units it is exactly 299792458 meters per second (299792.458 kilometers per second). Even electrons in atoms travel at approximately the same speed (but always less than speed of light)
What travels at approximately 1117million kilometers an hour?
1117x106 km/h ~= 3x108 m/s ~= speed of light in a vacuum. Speed of light at 299 792 458 m/s in a vacuum is nearer to 1080 million kilometers per hour.
What is the speed of all electromagnetic waves through a vacuum?
That is called the "speed of light". This speed is 299,792,458 meters per second, i.e., approximately 300,000 kilometers per second.
What is the speed of light in the vacuum in Kilometers seconds?
299,792.458 kilometers per second
What happens to speed of light when they travel through a vacuum?
In a vacuum, light always travels at the same speed, about 300 000 kilometers per second.
What is maxium speed?
It is the speed of light in vacuum, which is approximately 300,000 km per second.
What is the speed of light in a vacuum?
The speed of light in a vacuum is 186,282.397 miles per second or 670,616,629.2 miles per hour.
Do all electromagnetic waves travel at the same speed in a vacuum?
Yes. This speed is approximately 186,282 miles (299,792 kilometres) per second
What speed do electromagnetd travel in space?
Electromagnetic waves, including light, can travel at the speed of light in a vacuum, which is approximately 299,792 kilometers per second (186,282 miles per second).
Is the speed of light in a vacuum 300 thousand kilometers per second?
Yes
Is true about the speed of light?
There are a number of possible statements that are true.The speed of light in vacuum is approximately 299,792,458 metres per second.The speed of light in vacuum is the same as the speed of other electromagnetic radiation in vacuum.No massive can be accelerated to travel at the speed of light.
What is the speed of a light year?
# The distance that light travels in a vacuum in one year, approximately 9.46 trillion (9.46 × 1012) kilometers or 5.88 trillion (5.88 × 1012) miles.
What travels at approximately 1117 million kilometres an hour?
Speed of light * * * * * Nothing, since the speed of light in vacuum is around 1080 million km/h. In any case, the "speed of light" does not travel!
