V = [latex] 3cm^{3}[/latex] g (ro) = [latex]2,7 frac{g}{cm3} [/latex] m = ? zad.2  g (ro) = 9,3[latex] 9,3frac{g}{cm3} [/latex] m = 2 kg. V = ?  Na jutro !!!

[latex]q=frac{m}{V}[/latex] q (ro) - gęstość [g/cm3] m - masa [g] V - objętość [cm3] zad 1 q = 2,7g/cm3 V = 3cm3 m = ? q = m : V  |*V q*V = m 2,7*3 = m 8,1g = m zad 2 q = 9,3g/cm3 m = 2kg = 2000g  (bo 1 kg = 1000g) V = ? q = m : V  |*V q*V = m  |:q V = m : g V = 2000 : 9,3 V = 215,05cm3