Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015m and Ezhilan argues that it is 9.46 × 1012km. Who is right? Justify your answer.
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A light year is the distance that light travels in one year at constant speed.
Light year = speed of light × one year
Speed of light =c = 3.00 × 105 miles per second
Time =t= 3.154×107 seconds
d=c×t
d=(3.00× 〖10〗^5 ) ×(3.154 ×10^7)
=9.46 × 〖10〗^12=9.5 trillion miles
Let’s convert the light years into miles and kilometers.
Light year to kilometer ----- 9.46×1012 km
Light year to miles ------- 5.88 ×1012miles
Therefore, Ezhilan was correct.
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Answer: this is my answer hope it will be correct
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