Question

A light year is the distance light travels in one year. The speed of light is c=186,300 miles per second. How far is a light year in miles? If light travels from the sun to earth in about 8 minutes, about how far is the sun from the earth?

Answer 1

a light year in miles = 5.875 * 10¹² Miles , Distance of sun from the earth  = 89.426 * 10⁶ Miles

Step-by-step explanation:

speed of light is c = 186,300 miles per second.

A light year is the distance light travels in one year.

Seconds in a year = 365 * 24 * 3600  = 3,15,36,000 secs

a light year in miles = 186,300 * 3,15,36,000

light year in miles = 58,75,15,68,00,000

= 5.875 * 10¹² Miles

= 5.875 Trillion Miles

light travels from the sun to earth in about 8 minutes

= 8 * 60 = 480 sec

Distance of sun from the earth  = 186,300 * 480

= 8,94,24,000 Miles

= 89.426 * 10⁶ Miles

= 89.426 Million Miles

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