Áp dụng định luật Boyle:
\(p_1.V_1=p_2.V_2\)
\(\Rightarrow p_1.V_1=p_2.\dfrac{V_1}{2}\)
\(\Rightarrow\left(\rho gh_1+p_0\right)=\left(\rho gh_2+p_0\right).\dfrac{1}{2}\)
\(\Rightarrow10^3.10.1+10^5=\left(10^3.10.h_2+10^5\right).\dfrac{1}{2}\)
\(\Rightarrow1,1.10^5=\left(10^4.h_2+10^5\right).\dfrac{1}{2}\)
\(\Rightarrow2,2.10^5=10^4.h_2+10^5\)
\(\Rightarrow12.10^4=10^4.h_2\)
\(\Rightarrow h_2=\dfrac{12.10^4}{10^4}=12\left(m\right)\)
➜ D