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The speed of light in a vacuum is 300,000 km/second.

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12y ago

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What is the average constant speed of light in vacuum?

The speed of light in vacuum is 299,792,458 meters per second, and that's not an average. That's what it always is.


What is The average speed of light in outer space?

The speed of light in a vacuum is about 300,000,000 kilometers per second. Since light can't travel at any other speed (in a vacuum), that's also the average speed.


How does the average speed of light in glass compare with its speed in a vacuum?

3/4th


How does the average speed of light glass compare with its speed in a vacuum?

About 2/3 its speed in a vacuum.


How does the average speed of light in glass compass with its speed in a vacuum?

There are several different types of glass, and light has a somewhat different speed in each of them. On the average, the speed of light across all typical types of glass is in the neighborhood of 2/3 its speed in vacuum, or around 200,000 km/sec .


What is the average speed that light travels?

186,000 miles per second


How does the average speed of light in glass compare with its speed in vacuum?

Depends on the refractive index of the medium itself


What is the average light speed when light beam emerges from water into air?

The speed of light in air is approx 299,700,000 metres per second. This is not very different from its maximum speed which is its speed in vacuum: 299,792,458 metres per second. The fact that the beam emerges from water is irrelevant.


How long does it take to go to the moon by the speed of light?

At its average distance from the earth, the moon is 1.28 light seconds away.


What is the average speed of electricity?

There are three different speeds here.The average speed of electrons - whether there is a current or not - is a significant fraction of the speed of light. That speed depends on the temperature. (The average VELOCITY of course is zero if there is no current, since as many electrons will go in one direction as in another.) The drift velocity (the average velocity) of the electrons is a small fraction of a millimeter per second. The exact value depends on the current, the cross section, and the material. The speed at which a signal can propagate in copper is about 2/3 of the speed of light in a vacuum - so, about 200,000 km/second. It is this speed that makes your light react quickly when you activate a switch.


Is it the speed of light or light speed?

Is what the speed of light or light speed.ANSWER300,000 km/s


Does average speed include the time it takes sitting at a red light?

YESBut ideally, NO.Explanation:Ideally, the calculated average speed should NOTinclude stopped time.But on a device like a GPS, time spent stopped IS included in your average speed,thus lowering it significantly.