I don’t really know this one?! But I think this might be similar to your answer if not just go over the book <3!
A simple sentence because they are short and sweet
The answer is to this question is “true”
Answer:
when an ambulance passes with its siren blaring, you hear the pitch of the siren. The siren's pitch sounds higher than when it is moving away from you.
So while the siren produces waves of constant frequency, as it approaches us
Explanation: