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                                Introducere:

Stim de la lectia anterioara ca undele care provoaca senzatii auditive se numesc unde sonore sau sunet.

Fara sunet nu am putea fizic sa vorbim intre noi si sa ne intelegem de aceea sunetul este unul dintre cele mai importante lucru din lume.

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"Proiect la fizica:Indentificarea conditiilor in care se produc si se propaga sunetul!"

15 pages
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