p36_006 - (b) The time diFerence (as a multiple of L/c ) is...

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6. (a) The time t 2 it takes for pulse 2 to travel through the plastic is t 2 = L c/ 1 . 55 + L c/ 1 . 70 + L c/ 1 . 60 + L c/ 1 . 45 = 6 . 30 L c . Similarly for pulse 1: t 1 = 2 L c/ 1 . 59 + L c/ 1 . 65 + L c/ 1 . 50 = 6 . 33 L c . Thus, pulse 2 travels through the plastic in less time.
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Unformatted text preview: (b) The time diFerence (as a multiple of L/c ) is t = t 2 t 1 = 6 . 33 L c 6 . 30 L c = . 03 L c ....
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