Two adjacent sources each emit a frequency of 800. Hz in air ...

[jasdeep_brar]

Two adjacent sources each emit a frequency of 800. Hz in air where the velocity of sound is 340. m/s. How much farther back would the first source have to be moved so an observer in front of the sources would hear no sound?
 
  What will be an ideal response?

Question 2

At double the distance from a long current-carrying wire, the strength of the magnetic field produced by that wire decreases to
 
  A) 1/8 of its original value.
  B) 1/4 of its original value.
  C) 1/2 of its original value.
  D) 1/ of its original value.
  E) /3 of its original value.

[JaynaD87]

Answer to Question 1

0.213 m

Answer to Question 2

C

[jasdeep_brar]

Excellent

[fatboyy09]

Thanks for the timely response, appreciate it