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Usimov [2.4K]
3 years ago
10

The star nearest to our sun is Proxima Centauri, at a distance of 4.3 light-years from the sun. How far away, in km, is Proxima

Centauri from the sun?
Physics
2 answers:
Cloud [144]3 years ago
5 0

Answer: 4.068(10)^{13} km

Explanation:

A light year is a unit of length and is defined as <em>"the distance a photon would travel in vacuum during a Julian year at the speed of light at an infinite distance from any gravitational field or magnetic field. </em>"

In other words: It is the distance that the light travels in a year.

This unit is equivalent to 9.461(10)^{12}km, which mathematically is expressed as:

1Ly=9.461(10)^{12}km

Doing the conversion:

4.3Ly.\frac{9.461(10)^{12}km}{1Ly}=4.068(10)^{13}km

DaniilM [7]3 years ago
5 0

The Answer: The star closest to our sun is 4.2 light years away from the sun.

Explanation:

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