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Checking progress account…
Opening your study space…
Lesson
Review forces and energy changes, how simple machines help, and how light, sound, and heat travel.
Learning objectives
Explain when a force does work on an object.
Explain the trade-off between effort force and distance.
Connect sound and pitch to vibrations.
Lesson
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Notes
Review the compact notes before moving into recall.
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Practice
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Lesson progress
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