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1. Bęben pralki mający promień 25 cm wykonuje 1200 obrotów na minutę. a) Oblicz okres obrotu i częstotliwość - Brainly.pl
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Amazon.com: BEBEN 4 Modes Water Flossers Cordless for Teeth, Water Electric Flosser Picks for Teeth Cleaning, IPX7 Portable and Rechargeable Dental Floss and picks, 300ml Dental Oral Irrigator for Home and Travel :
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