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30-04-2021
Physics

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7. It takes 1 second to hear the reflection of a loud noise made in front of a large barrier. If
the speed of sound in air is 340 m/s, how far away is the barrier?
A. 85 m
B. 170 m
C. 340 m
D. 680 m

Respuesta :

ilovemywrestling ilovemywrestling

30-04-2021

Answer:

C 340 m

Explanation:

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