What is the gauge pressure at a depth of 10 m in water (density 1000 kg/m^3, g = 9.81 m/s^2)?
- A100 kPa
- B981 kPa
- C9.81 kPa
- D98.1 kPaCorrect
Why: Hydrostatic pressure p = rho·g·h = 1000 x 9.81 x 10 = 98,100 Pa = 98.1 kPa. Pressure increases linearly with depth and is independent of the container's shape.

