The U-tube manometer shown in the figure below has two fluids, water and oil ($SG = 0.80$). The height of the oil column is $h_0 = 16.0$ cm.
$p_A$
$p_A$
$\vec{g}$
Oil
$h_0$
Water
Find the height difference between the free water surface and the free oil surface with no applied pressure difference.
$\Delta h =$
cm