Question

Trumpeter A holds a B-flat note on the trumpet for a long time. Person C is running towards the trumpeter at a constant velocity. Person B is running away 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-flat?
A) Person A
B) Person B
C) Person C
D) Person D

Answer 1

Answer:B

Explanation:Making fast and simple :)

Answer 2

The person running towards the trumpet, Mr. C,
hears a higher frequency.

The person running away from the trumpet, Mrs. B,
hears a lower frequency.

The trumpeter, Mr. A, and the person who is just standing still
and listening, Miss D, both hears the beautiful perfect B-flat.