character: Ms. Sarah Johnson
topic: Mechanical Waves and Their Characteristics
grade: 9
subject: Physics
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character: Mr. Tom Anderson
topic: Introduction to Waves
grade: 9
subject: Physics
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character: Dr. Emily Carter
topic: Types of Waves: Transverse and Longitudinal
grade: 9
subject: Physics
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character: Ms. Jessica Lee
topic: Wave Properties: Amplitude, Frequency, and Wavelength
grade: 9
subject: Physics
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