Answer:
Apparent Increase in Wave Frequency
As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren 'sounds' higher than its original value, as sound waves reach you 'more frequently'.
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hope this helps
Answer:
90? maybe... i'm not positive but i hope it helped
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Answer:
Can you see my answer?
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Everytime i try answering it won't work. I just wanted to know if u can see this
Answer:It’s 63427.90
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