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Biology, 12.02.2020 17:10 rostecorralmart

Trumpeter A holds a B-fiat note on the trumpet for a long time. Person is running towards the trumpeter at a constant velocity
Person B is running array from the trumpeter at the same rate Person D is standing still the whole time
Which person hears a frequency that is lower than the B-fiat2
Person A
Person 3
Person
Person D

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Trumpeter A holds a B-fiat note on the trumpet for a long time. Person is running towards the trumpe...
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