Odpowiedź :
masa = gęstość * objętość
m = d*v
dane:
v=200 cm3
d=7,8g/cm3
m=200 cm3 * 7,8g/cm3 = 1560 g
m = d*v
dane:
v=200 cm3
d=7,8g/cm3
m=200 cm3 * 7,8g/cm3 = 1560 g
[tex]dane:\\V = 200 \ cm^{3}\\d = 7,8\frac{g}{cm^{3}}\\szukane:\\m = ?\\\\\\d = \frac{m}{V} \ \ /\cdot V\\\\m = V\cdot d\\\\m = 200 \ cm^{3}\cdot7,8\frac{g}{cm^{3}}\\\\\boxed{m = 1 \ 560 \ g = 1,56 \ kg}\\\\(1 \ kg = 1000 \ g)[/tex]