8.. Pressure Field when Fluid is at Rest

Try these first

1. 1.

   Define gauge pressure.

   Hint

   Think about how pressure is compared to what we typically feel around us.

2. 2.

   What happens to pressure when you go deeper underwater?

   Hint

   Consider how the weight of fluids above contributes to pressure.

3. 3.

   What does gauge pressure measure?

   • Pressure above atmospheric pressure
   • Pressure below atmospheric pressure
   • Absolute pressure

   Hint

   Consider what most pressure gauges indicate.

4. 4.

   True or False: The pressure in a fluid at rest varies with respect to horizontal planes.

   • True
   • False

   Hint

   Think about how depth affects pressure differently.

5. 5.

   If the atmospheric pressure is 101.3 kPa, and the gauge pressure at a certain point underwater is 50 kPa, what is the absolute pressure at that point?

   Hint

   Remember to use the gauge pressure relative to atmospheric to find the absolute value!

6. 6.

   A tank is filled with water that is 5 meters deep. Calculate the pressure at the bottom of the tank.

   Hint

   Use the specific weight of water and the depth to calculate the pressure.