A light year is the distance that light can travel in one year. 1 light year = 9,460,000,000,000km. a Express one light year in scientific notation. b The average distance between
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A light year is the distance that light can travel in one year. 1 light year =9,460,000,000,000 km. a. Express one light year in scientific notation. b. The average distance between Earth
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