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Please assist me with part B of this question Thank you 21. Five expanding wave

ID: 1608336 • Letter: P

Question

Please assist me with part B of this question Thank you 21. Five expanding wave fronts from a moving sound source are shown. The dots represent the centers of the respective circular wave fronts, which is the location of the source when that wave front was emitted. The frequency of the sound emitted by the source is constant. a. Indicate on the figure the direction of motion of the source. Which sound wave front was produced first? How do you know? Explain. b. Do the observers at locations A and B hear the same frequency of sound? If not, which one hears a higher frequency? Explain.

Explanation / Answer

part a )

the largest circle , because it expand most .

part b )

NO .

because small lambda means higher frequency so at point B