character: Mr. Smith
topic: Wave Behavior and Interference
grade: 9
subject: Physics
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character: Mr. Johnson
topic: Wave Properties and Applications
grade: 9
subject: Physics
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character: Ms. Davis
topic: Understanding Sound Waves and Interference Patterns
grade: 9
subject: Physics
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character: Dr. Lee
topic: Light Waves and Their Behavior
grade: 9
subject: Physics
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