An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170-Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer's location, point P?
?

?

A.

0

B.

C.
?

D.
2?

E.
4?


Answer: C

Physics & Space Science

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?

?

a.
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b.
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c.
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d.
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Fill in the blank(s) with the appropriate word(s).

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