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lu
updated 1 month ago

The speed of light is 2.998x10^8 m/s. How long does it take light to travel 70 cm? Set the math up.

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1 Answer
je
updated 1 month ago

Speed of light (c) = 2.998 x 10⁸ m/sec.

Distance (s) = 70 cm = 0.7 m

Time (t) =?

What we have is

Speed (c) = Distance (s)/ Time (t)

Time (t) = Distance (s)/ Speed (c) = 0.7 m/ 2.998 x 10⁸m/ sec.

= 0.233 x 10⁻⁸ sec

≈ 2.33 x 10⁻⁹ sec

Than goes

Time (t) = 2.33 n sec
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