at frequency does the observer hear?

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An emergency vehicle with its siren turned on at a frequency of 790HZ, moves away from a stat
ionary observer at a speed 25m/s. What frequency does the observer hear?
698 Hz
O 757 Hz
735 Hz
750 Hz
Transcribed Image Text:An emergency vehicle with its siren turned on at a frequency of 790HZ, moves away from a stat ionary observer at a speed 25m/s. What frequency does the observer hear? 698 Hz O 757 Hz 735 Hz 750 Hz
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