How many nanoseconds does it take light to travel 27.5 cm in vacuum?
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1.3. How many nanoseconds does it take light to travel 1.00 ft in vacuum? (This result is a useful quantity to remember.)
How long (in ns) does it take light to travel 1.0 m invacuum?What distance does light travel in water during the time that ittravels 1.0 m in vacuum?What distance does light travel in glass during the time that ittravels 1.0 m in vacuum?What distance does light travel in diamond during the time that ittravels 1.0 m in vacuum?