character: Mrs. Davis
topic: The Electromagnetic Spectrum and Technology
grade: 9
subject: Physics
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character: Dr. Smith
topic: Understanding Waves and Frequencies
grade: 9
subject: Physics
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character: Ms. Johnson
topic: Applications of the Electromagnetic Spectrum in Modern Technology
grade: 9
subject: Physics
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character: Mr. Brown
topic: The Role of Electromagnetic Radiation in Communication Systems
grade: 9
subject: Physics
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