character: Mr. Johnson
topic: Wave Properties and Behavior
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: Mr. Johnson
topic: Electromagnetic Waves and Their Applications
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Interference and Diffraction of Waves
grade: 11
subject: Physics
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