character: Mr. Thompson
topic: Wave Frequency and Wavelength
grade: 12
subject: Physics
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character: Mr. Johnson
topic: Understanding Sound Waves
grade: 12
subject: Physics
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character: Ms. Smith
topic: Light and Electromagnetic Waves
grade: 12
subject: Physics
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character: Dr. Lee
topic: The Doppler Effect in Waves
grade: 12
subject: Physics
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