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a student witnesses a flash of lightning

A student witnesses a flash of lightning and then t = 6.5 s later the student hears the associated clap of thunder. Light travels at 3.0 × 108 m/s in the air. How long, t1, in seconds did it take the light to reach the student’s eyes after the flash?

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asked by joe
Sep 11, 2014
First, find the speed of sound, and then recall that

distance = time * speed.

Then, since time = distance/speed, divide that distance by the speed of light.

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posted by Steve
Sep 11, 2014
1.08*10^8

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posted by A
Aug 26, 2015
0.00000743166

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posted by Anonymous
Aug 26, 2017

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