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It takes a pulse of light 35 microseconds to travel down a 5.0 km length of fiber optic cable. How fast does light move through the cable (in m/s)?
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It takes a pulse of light 35 microseconds to travel down a 5.0 km length of fiber optic cable. How fast does light move through the cable (in m/s)?

User Bigerock
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It takes 7 microseconds for each km
User Fithu
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