The pattern of sound waves emitted by a source is shown in the picture above. Th
ID: 2063482 • Letter: T
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.
Using the information shown in the picture, determine the velocity of the source. If you determine that the source is traveling to the right, give your answer a + sign. If you determine that the source is traveling to the left, give your answer a - sign.
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. Using the information shown in the picture, determine the velocity of the source. If you determine that the source is traveling to the right, give your answer a + sign. If you determine that the source is traveling to the left, give your answer a - sign.Explanation / Answer
from the largest circle it is clear that the source has traveled a distance of 2m while the sound it has emitted traveled a distance of 5 m => t = 5/350 = 2/v where v = velocity of the source => v = 140 m/s
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