The pattern of sound waves emitted by a source is shown in the picture above. Th

Question

The pattern of sound waves emitted by a source is shown in the picture above. The source is the small dot - at the instant shown in the picture, the source is located on at x = -1 m, y = 0. At rest, the source emits a frequency of f. The speed of sound is 350 m/s. The small black rectangle in the picture represents an observer.

(a) Which of the following statements about this situation are true?

The source is definitely moving.

The observer is definitely at rest.

Of the five waves shown in the picture, the one that was emitted first is the one with the largest radius.

When the source emitted that first wave, the source was located at x = -3 m, y = 0.

The source is traveling faster than the waves.

Explanation / Answer

1) The source is definitely moving. 2) Of the five waves shown in the picture, the one that was emitted first is the one with the largest radius. 3) When the source emitted that first wave, the source was located at x = -3 m, y = 0. all these three answers are correct. the rest false.

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