djones6930 djones6930

12-03-2024
Physics

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A source of sound of frequency 90 vibrations/ sec is approaching a stationary observer with a speed equal to 1/10 the speed of sound. What will be the frequency heard by the observer
a. 80 vibrations/sec
b. 90 vibrations/sec
c. 100 vibrations/sec
d. 120 vibrations/sec

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