A police car passes a pedestrian with its siren on. A change in the siren's pitch is

asked Nov 26, 2021 84.3k views

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4 votes

Answer:

By the pedestrian.

Step-by-step explanation:

Gordian Yuan answered Nov 28, 2021

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7 votes

The Doppler effect. The farther away the siren gets, the lower the pitch will get.

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