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23 June, 19:09

Elephants can communicate using very low frequency sound waves over long distances. An elephant makes a noise below human hearing at 16Hz. This low rumble moves at 350 m/s (speed of sound in air). This sound is detected by her friend 25 seconds later.

How far away is her friend?

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Answers (1)
  1. 23 June, 20:07
    0
    8750 m

    Explanation:

    S = v x t

    S = 350 x 25

    S = 8750 m
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