An exploratory robotic probe is submerged in a liquid carbon dioxide lake on a distant exoplanet, as shown in the diagram below.
The total pressure on the probe is due to both the atmosphere above the lake and the liquid carbon dioxide itself.
- The atmospheric pressure at the surface of the lake is 2.4 bar2.4\text{ bar}2.4 bar.
- An additional depth of 8.0 m of liquid carbon dioxide is equivalent to 1.0 bar1.0\text{ bar}1.0 bar of pressure.
Identify the total pressure, in bar, acting on the robotic probe at a depth of 36.0 m.
2.1 bar2.1\text{ bar}2.1 bar
4.5 bar4.5\text{ bar}4.5 bar
6.9 bar6.9\text{ bar}6.9 bar
10.8 bar10.8\text{ bar}10.8 bar