2.2. Derivation of Pressure Variation

Try these first

1. 1.

   What is the function of a barometer?

   Hint

   Think about pressure measurement devices.

2. 2.

   Define gauge pressure.

   Hint

   How does it compare to absolute pressure?

3. 3.

   What measures atmospheric pressure?

   • Manometer
   • Barometer
   • Differential gauge

   Hint

   Remember the device used for measuring atmospheric conditions.

4. 4.

   True or False: Gauge pressure includes atmospheric pressure.

   • True
   • False

   Hint

   Think about how pressure is measured in fluids.

5. 5.

   Derive the pressure variation equation for an ideal gas at constant temperature from the ideal gas law.

   Hint

   Focus on how the gas properties change with height due to pressure differences.

6. 6.

   Explain how you would design a manometer for measuring high-pressure steam.

   Hint

   What's most critical about the fluid used?