First of all, the speed of light is 3 x 108 meters per second, not 3 x 105.
It will take 10 milliseconds for a ray of light to travel 3 x 106 meters at a speed of 3 x 108 meters per second.
If the number in the question were correct, which they are not, the answer would be ten seconds.
One light year, or the distance that a beam of light can travel in one year, at 186,000 miles per second.
Now, normally, time is linear and inescapable. However, at extreme speeds, approaching the speed of light, special relativity states that time is perceived as slower by the people travelling at that speed. One example of this is the premise of Planet of The Apes. The astronauts are travelling at something near the speed of light, so while a short time passes for them, a very long time passes for Earth.
Any number that doesn't change is a constant. Some famous ones are the gravitational constant, the speed of light in a vacuum, and Planck's constant.
mc2 could mean many things, but I assume you are talking about Einstein's famous equation E=mc2. I won't even pretend to know all the information behind this equation, but my understanding is that it basically calculates the amount of energy that could be spontaneously created by any mass. In the equation, E=mc2 E = Energy M = Mass C = Speed of Light (or 299,792,458 meters/second)
The number is the load rating. Common car tyres range from about 87 (small car, light load) to 97 (larger car, heavier load) but can go from 71 (345kg) - 110 (1060kg). The letter is the speed index. Y is currently the highest available, tested up to 300km/h. More common indices are H (210km/h) & V (240 km/h).
X-rays are a kind of electromagnetic radiation - similar to light. They travel at the speed of light through a vacuum - about 300 million meters/second.X-rays are a kind of electromagnetic radiation - similar to light. They travel at the speed of light through a vacuum - about 300 million meters/second.X-rays are a kind of electromagnetic radiation - similar to light. They travel at the speed of light through a vacuum - about 300 million meters/second.X-rays are a kind of electromagnetic radiation - similar to light. They travel at the speed of light through a vacuum - about 300 million meters/second.
The speed of air at 20 degrees Celsius is 343 meters per second. The speed of light is 299 792 458 meters per second.
299,792,458 meters (186,282 miles) per second.
186,000 miles or 300,000,000 meters per second. The speed of light.
That depends on what your light ray is traveling through. If through vacuum, then its speed is 299,792,458 meters per second. If through anything else but vacuum, then (299,792,458 meters per second) divided by (the index of refraction of that material.
It travels at the "speed of light". In vacuum, that's 299,792,458 meters per second. In any kind of material substance, it's less. How much less depends on the individual substance ... they're all different.
The speed of light in a vacuum has been defined as exactly 299,792,458 meters per second.
All electromagnetic waves travel through space at the "speed of light". Light is one form of electromagnetic waves.
the true answer is light speed
Radio waves travel at the speed of light 300 Million meters/second, 300e6 meters/second
Electrons are able to travel close to speed of light.
Light and radio waves travel slower through air than they do through space or vacuum. But as soon as they leave the atmosphere and get into space or vacuum, they speed up to 299,792,458 meters per second.