You didn't mention it, but the trumpeter herself has to be standing still.
<span>Person C, the one running towards the trumpeter, hears a pitch
that is higher than B-flat. (A)
Person B, the one running away from the trumpeter, hears a pitch
that is lower than B-flat.
Person D, the one standing still the whole time, hears the B-flat.</span>
Answer:
c
Explanation:
cuz its informing the length of 5 and weight on 20N
Answer:
3000 hurs
Explanation: just divide 150000 by 50 and get 3000