To find the hydrostatic pressure at the depth under consideration, we will use the formula: P = ρ * g * h.
Constants and variables: ρ – density of sea water (ρ = 1030 kg / m3); g – acceleration due to gravity (g ≈ 10 N / kg); h – immersion depth (h = 400 m).
Let’s perform the calculation: P = ρ * g * h = 1030 * 10 * 400 = 4.12 * 10 ^ 6 Pa = 4.12 MPa.
Answer: The hydrostatic pressure at a depth of 400 m is 4.12 MPa.
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