Question

care este viteza termica a moleculelor unui gaz cu masa de 3 kg, ce ocupa volumul V=5 m cub la presiunea p=5*10^5 PA.
pls repede

Answer 1

[tex]\displaystyle \text{Se da:}\\ \\ m=3kg\\ \\ V=5m^3\\ \\ p=5\times 10^5Pa\\ \\ v=?\frac ms\\ \\ \\ \text{Formule:}\\ \\ v=\sqrt\frac{3\times R\times T}{M}\\ \\ \\ [/tex]


$\displaystyle p\times V=\nu\times R\times T\\ \\ R\times T=\frac{p\times V}{\nu}\\ \\ \\ v=\sqrt\frac{3\times p\times V}{\nu\times M}\\ \\ \\ m=\nu\times M\\ \\ \\ v=\sqrt\frac{3\times p\times V}{m}\\ \\ \\ \text{Calcule:}\\ \\ v=\sqrt\frac{3\times 5\times 10^5\times 5}{3}\approx 1581\frac ms$