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Potreboval by som vypočítať navášky týchto chemikálií CaCl2 a MgSo4 tak aby
Ca k Mg bol 3:1
Keď je to možné celú rovnicu tak ako ste to počítali .
vopred Vám veľmi ďakujem.
Potreboval by som vypočítať tento príklad. Tu je celé znenie: Vypočítajte moment zotrvačnosti vodného lopatkového mlynčeka zloženého z valca s polomerom R a 4 lopatiek dĺžky L.
Na čo všetko sa využva magnetická sila? Môžeme zmagnetizovať úplne všetky predmety? Prečo? Vysvetli, ako môžeme využitím magnetickej sily zistiť, kde je sever, ak práve nemáme kompas.
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