Final answer:
The absolute pressure in salt water can be calculated using the equation P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth of the fluid.
Step-by-step explanation:
A student is asking about the absolute pressure expressed in terms of atmospheres absolute at a specific depth in salt water. The pressure at a given depth in a fluid is determined by the weight of the fluid above it and can be calculated using the equation P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth of the fluid. In this case, salt water is denser than fresh water, so the density value must be adjusted accordingly.