character: Dr. Ramirez
topic: Applications of Frequency and Wavelength in Real Life
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Sound Waves and Music Frequency
grade: 11
subject: Physics
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character: Ms. Lee
topic: The Electromagnetic Spectrum and Its Uses
grade: 11
subject: Physics
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character: Professor Smith
topic: Wavelength Applications in Communication Technology
grade: 11
subject: Physics
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