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A car sounding its horn drives past a child standing still on the sidewalk.
Which of the following is an observation that can be explained by the Doppler Effect?
The horn sounds quiet when the car is far away and loud when the car is close.
The pitch of the horn seems to change as the car goes past the student.
From a distance, the student is able to see the driver push the horn before the student can hear the horn.
The student is able to hear other sounds at the same time as they are hearing the sound of the horn.