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# In a vacuum light can travel 300km in 1 what?

Updated: 8/11/2023 Wiki User

11y ago

Pretty close. The officially accepted standard value is 299,792.458,

which is only about 0.07% less than 300,000 . Wiki User

13y ago   Wiki User

12y ago

In a vacuum, light can travel 300,000 km in just over one second (because the speed of light is exactly 299,792,458 m.s-1).   Wiki User

11y ago

300,000 km/sec = 300 km in one millisecond.   Wiki User

6y ago

the mass of proton is 1.67 x 10   Wiki User

12y ago

ms   Earn +20 pts
Q: In a vacuum light can travel 300km in 1 what?
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### In a vaccuum light can travl at 300km in 1?

In 1 microsecond.

### How long is 1 millisecond?

A millisecond is one thousandth of a second. Light can travel about 300km in a millisecond. Blinking usually takes between 300 and 400 milliseconds.

### What does light travel best through?

Light travels fastest in a vacuum with an approximate speed of 3.0 * 108 ms-1.

### How fast does light travel in five minutes?

Light travels at a constant velocity, no matter what time it is given to travel. Light would travel at exactly 299,792,458 ms-1 in five minutes, but only in a vacuum.

### What is the meter defined as?

A metre is defined as the distance light will travel in 1/299 792 458 seconds in a vacuum.

### How many miles does light travel in 1 microsecond in a vacuum the speed of light in a vacuum is 186000 miles per second?

Since a microsecond is a millionth of a second, just divide the distance light travels in one second, by a million.

### How many miles does light travel through the air in 1 second?

186,000miles per second in a vacuum, slightly less in air.

### At what speed does all EM radiation travel at?

In a vacuum, 3x10^8 ms^-1. Basically the speed of light, it is EM radiation afterall.

### What is refer by light year?

A light year is the distance which light will travel in a vacuum. Light travels at 299,792,458 m/s in a vacuum, one year is 31557600s (on average taking into account leap years) so 1 light year is 9.46073x10^15m or 9 460 730 473 000 km

### What does light years mean?

LIGHT-YEAR (noun)The noun LIGHT-YEAR has 1 sense: 1. the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometersFamiliarity information: LIGHT-YEAR used as a noun is very rare.

### What distance does light travel in 1 nanometer also does this refer to the full cycle or wavelength?

1 nanometer is a distance. In vacuum, light travels 1 nanometer in about 3.3 x 10-18 second.Did you intend to ask "What distance does light travel in one nanosecond ?" ?Light travels 29.98 centimeters (rounded) in one nanosecond, which is onlyabout 2% different from 1 foot.So an easy way to remember it is: 1 light-nanosecond = 1 foot.1 full cycle is 1 wavelength.

### Is light faster than speed?

Your question makes no sense.The speed of light in a vacuum is c = 3 x 108 ms-1In simple terms, a photon of light will travel approximately 300,000,000 metres in 1 second.It's generally accepted that a particle cannot travel faster than the speed of light.