Does light travel 300 million meters per second?

Answer 1

No, that number is its speed. You can spot it right away, because "km per sec"

is a unit of speed, not frequency. The number you gave is a useful approximation,

and is within 0.07% of the real number.

Answer 2

-- The speed of light in any medium is the reciprocal of the square root of the product
of the electrostatic permittivity of the medium and its magnetic permeability.

-- In SI units, the electrostatic permittivity of vacuum is 8.85 x 10^-12 farad/meter,
and its magnetic permeability is 1.26 x 10^-6 henry/meter (both rounded).

-- The reciprocal of the square root of the product of those two quantities is (roughly)
300,000 km per second.

That's why.

Answer 3

Its speed is almost 300,000 kilometres per second, so yes, it does

Answer 4

The exact speed of light in a vacuum is 2.99792458 x 108 ms-1 or 2.99792458 x 105 km per second or 299,792,458 meters per second.

Answer 5

The speed of light is not 3000000 km per second so there is no reason for it to be that speed.

Answer 6

Light travels at a speed of approximately 299,792 kilometers per second in a vacuum, which is equivalent to about 299,792,458 meters per second.

Answer 7

176,238,050,200,000,000 miles.

Answer 8

There are approx 9.5 quadrillion metres.

Answer 9

300,000,000