character: Physics Teacher
topic: Doppler Effect in Sound Waves
grade: 9
subject: Physics
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character: Science Explorer
topic: Understanding the Doppler Shift
grade: 9
subject: Physics
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character: Sound Wave Specialist
topic: Interaction of Sound Waves with Moving Objects
grade: 9
subject: Physics
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character: Motion Analyst
topic: Effects of Movement on Sound Frequency
grade: 9
subject: Physics
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