The submarine moved from the surface of the water to the bottom of the Mariana Trench.
The change in pressure was 110 000 kPa.
mean density of sea water = 1026 kg/m³
gravitational field strength = 9.8 N/kg
Calculate the depth of the Mariana Trench. Use the Physics Equations Sheet.

The equation for the change in pressure in a fluid is: change in pressure (p) = height of column (h) × density of fluid (ρ) × gravitational field strength (g) p = hρg We need to calculate the depth (h), so we rearrange the formula: h = p / (ρg) First, we must convert the pressure from kilopascals (kPa) to pascals (Pa): p = 110 000 kPa = 110 000 × 1000 Pa = 1.1 × 10⁸ Pa Now, substitute the values into the rearranged equation: h = 110 000 000 / (1026 kg/m³ × 9.8 N/kg) h = 110 000 000 / 10054.8 h ≈ 10940 m The depth of the Mariana Trench is approximately 10940 metres (or 11 km).