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→4.1.1 Energy changes in systems, and how
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→4.1 Energy
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→4.1 Energy
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→4.1 Energy
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Created page with "==4.1 Energy== ===4.1.1 Energy changes in a system, and the ways energy is stored before and after such changes=== ====4.1.1.1 Energy stores and systems==== =====Systems==..."
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