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SAT® Subject Test in Physics

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Noisy Red Object in Motion

SATPHY-YCLZR2

In each of the diagrams that follow, a red object that emits sound is pictured. The sound waves are represented by the black circles.

Which picture best shows a situation that would allow a person to the right of the red object to hear a higher-pitched sound because the object is moving to the right toward the person?

A
B
C
D
E