Physics
Physics, 13.10.2019 23:30, BlehBlah1441

What is a light-year equal to?
a. the distance light travels in one year
b. the time it takes light to travel 10 trillion kilometers
c. the mean distance between the sun and the center of our galaxy
d. the time it takes our solar system to orbit the center of our galaxy

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Chemistry, 09.10.2019 05:40, keel5468
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What is a light-year equal to?
a. the distance light travels in one year
b. the time it...

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