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Physics, 29.06.2020 20:01 queen3574

Plz helpA 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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Plz helpA student heard the echo of her voice from nearby solid object after 2 sec. how far away is...
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