The use of the term sound waves in air is meant to describe: ...

[saraeharris]

The use of the term sound waves in air is meant to describe:
   
  1.the position of air molecules.
  2.the velocity of air molecules.
  3.the pressure variations in air.
  4.the displacement of air molecules.
  5.the flow of energy through the air.

Question 2

Two sound waves can interfere:
  1.only when traveling in the same direction.
  2.only when the frequencies are the same.
  3.only when both are sinusoidal.
  4.only when the phase difference is constant.
  5.None of the above.

[mathjasmine]

Answer to Question 1

3

Answer to Question 2

5

[saraeharris]

Thank you!

[mathjasmine]

Always glad to help...