character: Ms. Lisa Wong
topic: Understanding Frequency and Wavelength
grade: 9
subject: Physics
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character: Mr. John Smith
topic: Wave Properties and Behavior
grade: 9
subject: Physics
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character: Dr. Emily Zhang
topic: The Relationship Between Frequency and Wavelength
grade: 9
subject: Physics
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character: Ms. Sarah Johnson
topic: Applications of Wave Theory in Real Life
grade: 9
subject: Physics
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