Question Detail
Question
The Titanic was found in 1985 lying on the bottom of the North Atlantic at a depth of 1609 m. What is the pressure at this depth? (g = 9.8 m/s², density of sea water = 1025 kg/m³)
Correct Answer
Option C is the correct answer.
Detailed Explanation
Pressure due to fluid column: P = ρgh = 1025 × 9.8 × 1609 = 1025 × 9.8 = 10045, × 1609 = 16,162,405 Pa ≈ 1.62 × 10⁷ Pa. Adding atmospheric pressure (1.01 × 10⁵ Pa) gives about 1.63 × 10⁷ Pa. Option C is 1.6 × 10⁷ Pa.
Hint
P = ρgh for gauge pressure; add atmospheric for absolute.