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Dobrý den , potrebovala by som pomoc s týmto príkladom , ďakujem
Koľko tepla treba na zohriatie 1,5 litra vody v hliníkovom hrnci s hmotnosťou 0,3 Kg
z 283 K na 353 K ? Merná tepelná kapacita hliníka je 0,9 . 10 3 J/Kg. K a hustota vody je
1000 kg/m 3.
Chcem sa opýtať čo sa vypočíta mi sinuse, med v tejto úlohe som poznala iba príponu, priľahnú a protiľahlé stranu nepoznám, a sinus používam ked potrebujem zistiť preponu? Lebo získala som číslo 6,9…
Nepoznala som protiľahlé ani prilahlu stranu, tak protiľahlé som vypočítala cos, a peislahlu pytagoeovou vetou, mám to správne ?
doučma.sk
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