Science, asked by uustad578, 7 months ago

Jonathan placed a surface before a sound
source to hear a distinct echo. The minimum
distance of a reflecting surface should be:
(Speed of sound in air = 344 m/s)
( O
17.2 m
O
34.4 m
( O
9.8 m
()
3.40 m

Answers

Answered by trisha5183

2

Answer:

Hi please slove my answers

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