character: Mark Johnson
topic: The Principles of Sound: Frequency and Amplitude
grade: 12
subject: Physics
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character: Alfred Lord Tennyson
topic: Sound Waves and Their Properties
grade: 12
subject: Physics
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character: Isaac Newton
topic: Fundamentals of Sound Energy
grade: 12
subject: Physics
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character: Richard Feynman
topic: Wave Behavior and Sound Frequencies
grade: 12
subject: Physics
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