lilbit2344 lilbit2344

11-04-2018
Physics

contestada

Why does the frequency of a siren get higher as an ambulance using that siren gets closer?
a.as the ambulance gets closer, the sound waves slow down to reach the observer; so the frequency increases.
b.as the ambulance gets closer, the decreased distance creates less interference; so the frequency increases.
c.as the ambulance gets closer, the frequency of the sound waves is being stretched; so the frequency increases. eliminate
d.as the ambulance gets closer, the sound waves are compressed relative to the person; so the frequency increases?

Respuesta :

jackietorres24p7gi50 jackietorres24p7gi50

20-04-2018

The answer is D. As the ambulance gets closer, the sound waves are compressed relative to the person; so the frequency increases.

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braidlynatkinso braidlynatkinso

24-04-2018

I would say that the answer is D)

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