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3 years ago

8

Billy tapped the ruler and it made a funny noise. Billy heard the sound because the ruler vibrated ____________ molecules back a

nd forth.
A) the air
B) his ear
C) the table
D) his finger

2 answers:

irga5000 [103]3 years ago

6 0

A. The air hope this helps you

Ivan3 years ago

3 0

A. the air. All the other choices don't make sense.

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