An elephant can hear sound with a frequency of 15 Hz. What is the ...

[jace]

An elephant can hear sound with a frequency of 15 Hz. What is the wavelength of this wave if the speed of sound in air is 343 m/s?
 
  What will be an ideal response?

Question 2

As a supersonic airplane increases its speed more and more, the half-angle of the conical shock wave
 
  A) decreases. B) increases. C) is not affected.

[zogaridan]

Answer to Question 1

23 m

Answer to Question 2

A

[jace]

Thanks for the timely response, appreciate it

[blakcmamba]

Wow, this really help