A police car, with its siren on, is motionless in heavy traffic. A pedestrian notices that, although the loudness of the sound stays the same, the pitch changes. Which row describes the amplitude and the frequency of the sound?
Physics 0625 · IGCSE · Sound
A police car, with its siren on, is motionless in heavy traffic. A pedestrian notices that, although the loudness of the sound stays the same, the pitch changes. Which row describes the amplitude and the frequency of the sound?