character: Dr. Ellen P. Cummings
topic: Acoustics Researcher
grade: 11
subject: Physics
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character: Albert Einstein
topic: Theory of Relativity
grade: 11
subject: Physics
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character: Isaac Newton
topic: Laws of Motion
grade: 11
subject: Physics
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character: Galileo Galilei
topic: Studying Sound Waves
grade: 11
subject: Physics
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