character: Ms. Smith
topic: Wave Properties and Applications
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Sound Waves and Their Properties
grade: 11
subject: Physics
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character: Dr. Lee
topic: Light Waves and Optics
grade: 11
subject: Physics
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character: Ms. Williams
topic: Electromagnetic Waves and Communication
grade: 11
subject: Physics
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