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4 votes
Billy tapped the ruler and it made a funny noise. Billy heard the sound because the ruler vibrated

forth.
molecules back and
the air
his ear
the table
his finger

User Junsu Lee
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2 Answers

3 votes

Answer:

table I think .............

User Zevdg
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4.4k points
1 vote

Answer: the air

Step-by-step explanation:

User Hongbo Liu
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