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Physics, 30.04.2021 19:20, aliyahgregory
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
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Answers: 1
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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
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