character: Mrs. Lee
topic: The Role of Frequency in Sound Waves
grade: 9
subject: Physics
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character: Mr. Johnson
topic: Understanding Sound Wave Properties
grade: 9
subject: Physics
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character: Dr. Smith
topic: The Science of Frequency and Pitch
grade: 9
subject: Physics
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character: Ms. Taylor
topic: Applications of Frequency in Everyday Life
grade: 9
subject: Physics
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