character: Liam
topic: Sound Waves: Properties and Medium Dependence
grade: 11
subject: Physics
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character: Emma
topic: Wave Behavior: Reflection and Refraction
grade: 11
subject: Physics
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character: Noah
topic: Frequency and Wavelength Relationships
grade: 11
subject: Physics
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character: Olivia
topic: The Doppler Effect and Its Applications
grade: 11
subject: Physics
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