character: Ms. Lee
topic: Frequency and Wavelength in Waves
grade: 9
subject: Physics
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character: Mr. Smith
topic: Wave Properties and Speed
grade: 9
subject: Physics
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character: Ms. Johnson
topic: Types of Waves: Mechanical and Electromagnetic
grade: 9
subject: Physics
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character: Dr. Patel
topic: Understanding Wave Behavior: Reflection and Refraction
grade: 9
subject: Physics
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