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 no sound. Which of the following is true

The two waves are in phase in the middle of the theater.

The two waves are 45° out of phase in the middle of the theater.

The two waves are 90° out of phase in the middle of the theater.

The two waves are 180° out of phase in the middle of the theater.

I think its the last option?

Answer 1

@roadjester

Answer 2

@timo86m

Answer 3

@tHe_FiZiCx99

Answer 4

I think you're right.

Answer 5

really

Answer 6

I am not sure

Answer 7

I'm in between A and D but more towards D

Answer 8

"Phase" is measured in degrees from 0-360. 0 degrees means both sounds are exactly in sync.180 degrees means both sounds are parallel or opposite of each other -- meaning they're out of phase. When two sounds are in phase, they're added together thus their combination makes stronger outcome.

Answer 9

so.. which do u think is correct?

Answer 10

I said I think its D >_<

Answer 11

180 is right