Two small forward-facing speakers are 2.50 m apart. They are both ...

[Bob-Dole]

Two small forward-facing speakers are 2.50 m apart. They are both emitting, in phase with each other, a sound of frequency 1100 Hz in a room where the speed of sound is 344 m/s.
 
  A woman is standing opposite the midpoint between the speakers and is initially 35.0 m from the midpoint. As she slowly walks parallel to the line connecting the speakers, at what angle  (relative to the centerline coming outward from the midpoint between the speakers) will she first hear no sound?
  A) 1.8 B) 7.2 C) 3.6 D) 11 E) 0.063

Question 2

The parallel-axis theorem can be applied only to flat objects.
 
  Indicate whether the statement is true or false

[Anna]

Answer to Question 1

C

Answer to Question 2

FALSE

[Bob-Dole]

Gracias!

[T4T]

Excellent