[tex]\boxed{\bold{1.}} \ V=5 \ cm^3=0,000 \ 005 \ m^3 \\ g=10 \ N/kg \\ F_A=0,525 \ N \\ \boxed{\rho-?} \\ \bold{Rezolvare:} \\ \boxed{F_A=\rho \cdot V \cdot g} \Rightarrow \rho= \frac{F_A}{g \cdot V} \\ \rho= \frac{0,525 \ N}{10 \ N/kg \cdot 0,000 \ 005 \ m^3} \\ \Rightarrow \boxed{\rho= 10 \ 500 \ kg/m^3 \to \boxed{argint}} \\ \boxed{\bold{2.}} \ \rho=7 \ 800 \ kg/m^3 \\ F_A=11,7 \ N \\ g=10 \ N/kg \\ \boxed{V-?} \\ \bold{Rezolvare:} \\ \boxed{F_A=\rho \cdot g \cdot V} \Rightarrow V= \frac{F_A}{g \cdot \rho} [/tex]
[tex]V= \frac{11,5 \ N}{7 \ 800 \ kg/m^3 \cdot 10 \ N/kg} \\ \Rightarrow \boxed{V=1,474 \cdot 10^{-3} \ m^3}[/tex]
