When you blow gently across the top of a particular soda bottle, it emits a tone. The column of air in the bottle is vibrating up and down in its fundamental mode. If you replace the air in the bottle with helium and then blow gently across the top of the bottle, it will emit
A. a higher pitched tone.
B. a tone at the same pitch as before.
C. no sound at all.
D. a lower pitched tone.
Answer:A
When you blow gently across the top of a particular soda bottle, it emits a tone. The column of air in the bottle is vibrating up and down in its fundamental mode. If you replace the air in the bottle with helium and then blow gently across the top of the bottle, it will emit
A. a higher pitched tone. B. a tone at the same pitch as before. C. no sound at all. D. a lower pitched tone.