Question

Two sound waves of the same frequency and amplitude are broadcast from speakers at opposite ends of a theater. In the middle of the theater, you hear a sound 6 dB louder than that from either speaker. Which of the following is true?

A. the two waves are in phase in the middle of the theater
B. the two waves are 45 degrees out of phase in the middle of the theater
C. the two waves are 90 degrees out of phase in the middle of the theater
D. the two waves are 180 degrees out of phase in the middle of the theater

Answer 1

I think it would be A.

Answer 2

I think that in the middle of the theatre we have a constructive interference

Answer 3

okay! so what does that mean? they are are in phase? or are they out of phase? :/

Answer 4

no, they are in phase

Answer 5

It would mean that they are in phase

Answer 6

ohh so choice A is our solution?

Answer 7

yes! I think so!

Answer 8

yay!! thank you both!!:)

Answer 9

please wait a moment

Answer 10

ok!

Answer 11

so it is not choice A? or it still is?

Answer 12

no, it is A

Answer 13

that's right! It is option A

Answer 14

yay! thanks!!