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Zdravím! Vedeli by ste mi prosím pomôcť s týmto príkladom?
Dobrý deň, potrebujem pomôcť s týmito úlohami viď.obrazok. Ďakujem
Dobrý deň prajem, vedel by mi prosím niekto pomôcť s nasledujúcou úlohou. Vopred ďakujem. Do akej výšky treba naplniť trubicu ortuťou ( hustota ortuti je 13,6 . 103 kg.m-3 ) za atmosferického tlaku…
Na vozíku s hmotnosťou 10 kg stojí chlapec s hmotnosťou 45 kg. Vozík sa pohybuje rýchlosťou 2 m·s-1. Chlapec vyhodí kameň s hmotnosťou 0,6 kg v smere pohybu vozíka pod elevačným uhlom 30° rýchlosťou…
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