plz help-.A student heard the echo of her voice from nearby solid object after 2 sec. how far away is the solid object? The speed of soun

Question

plz help…..A student heard the echo of her voice from nearby solid object after 2 sec. how far away is the solid object? The speed of sound in air is 340m/s.

A. 170m

B. 340m

C. 510m

D. 680m

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Thanh Hà 3 years 2021-08-24T16:42:00+00:00 1 Answers 3 views 0

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    0
    2021-08-24T16:43:16+00:00

    Answer:

    B.

    340meters per second x 2 seconds = 680 meters away

    divided by 2coming back = 340

    Hope this helps

    Explanation:

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