1.11. Specific weight variation in fluids

Try these first

1. 1.

   What happens to pressure as you dive deeper into water?

   Hint

   Think about the weight of the water above you.

2. 2.

   What is Pascal's law?

   Hint

   It’s about pressure being equal everywhere in a fluid.

3. 3.

   As depth increases in a fluid, pressure:

   • Increases
   • Decreases
   • Remains the same

   Hint

   Think about the overall weight of water in a swimming pool.

4. 4.

   True or False: Buoyancy only applies to objects fully submerged in water.

   • True
   • False

   Hint

   Consider how half-sunken boats behave.

5. 5.

   A submarine is designed to operate at a depth of 300 meters. Calculate the pressure it would experience at that depth, given that the density of seawater is approximately 1025 kg/m³.

   Hint

   Recall the formula for hydrostatic pressure.

6. 6.

   Discuss how changes in altitude influence buoyancy and pressure for a helium balloon ascending from sea level to 3000 meters.

   Hint

   Consider how pressure changes with altitude.