contestada

If an emergency vehicle passes you in traffic, just as it passes you the pitch of
the siren changes. This is because:
OA. the amplitude increases as the siren is moving toward you, and
decreases as it is moving away.
OB. the frequency increases as the siren is moving toward you, and
decreases as it is moving away.
OC. the volume increases as the siren is moving toward you, and
decreases as it is moving away.
D. the wave speed increases as the siren is moving toward you, and
decreases as it is moving away.

Respuesta :

shristiparmar1221

If an emergency vehicle passes you in traffic, just as it passes you the pitch of the siren changes as it approaches, the siren’s pitch sounds higher than when it is moving away from you.the frequency increases as the siren is moving toward you, and decreases as it is moving away, is correct

This change is a common physical demonstration of the Doppler effect.

What is Doppler effect ?

This effect refers to the  increase in the frequency of sound, as the source and observer move toward (or away from) each other.

The effect causes the sudden change in pitch noticeable in a passing siren.

Hence Option (B) i.e, the frequency increases as the siren is moving toward you, and decreases as it is moving away, is correct

Learn more about Doppler' effect here ;

https://brainly.com/question/27507962

#SPJ1

Otras preguntas