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tanwolf183Lv1
11 Dec 2019
How long (in ns) does it take light to travel 1.00 m in a vacuum?
How long (in ns) does it take light to travel 1.00 m in a vacuum?
VikasLv10
15 Oct 2020
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How long (in ns) does it take light to travel 1.00 m in a vacuum?
