Question

Dintre urmatoarele egalitati,sunt corecte:
a)2,7 g/cm³ =2 700 kg/cm³;
b)1 kg/dm³=1 000 kg/m³;
c)2,5 kg/dm³=25 g/cm³;
d)7 800 kg/m³=7,8 g/cm³.

Answer 1

a) 2,7g/cm cub= 2.7g/0.000001 m cubi=2700000g/m cub=2700kg/m cub    Adevarat
b) 1kg/dm cub= 1kg/0.001 m cubi=1000 kg/m cub     Adevarat
c) 2,5kg/dm cub=2500g/dm cub=2500g/1000cm cubi=2500000g/m cub    Fals
d) 7800 kg/m cub=7800000 g/1000000cm cubi= 7800000000000g/cm cub  Fals