Question

The sound of a police siren that is moving away has

wavelengths, and one that is approaching has wavelengths

Answer 1

AnswerThe sound of a police siren that is moving away has shorter wavelengths, and one that is approaching has longer wavelengths.:

Step-by-step explanation:

Answer 2

The sound of a police siren that is moving away has shorter wavelengths, and one that is approaching has longer wavelengths.