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Author Question: One reason for the higher pitch of your voice after you've inhaled some helium is that sound travels ... (Read 80 times)

azncindy619

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on: Jul 29, 2018
One reason for the higher pitch of your voice after you've inhaled some helium is that sound travels
 
  A) slower in helium than in air.
  B) faster in helium than in air.
  C) the same speed in helium but with a longer wavelength.

Question 2

Refraction of sound can occur in
 
  A) air.
  B) water.
  C) both of these
  D) neither of these


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triiciiaa

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


azncindy619

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Reply 2 on: Jul 29, 2018
Wow, this really help

6ana001

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Reply 3 on: Yesterday
Excellent

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