2. Pressure Variations in Compressible Fluids

Try these first

1. 1.

   What does a barometer measure?

   Hint

   Think about what is in the atmosphere around us.

2. 2.

   Define gauge pressure.

   Hint

   Consider what pressure means in everyday terms.

3. 3.

   What does a barometer primarily measure?

   • Water pressure
   • Atmospheric pressure
   • Oil pressure

   Hint

   Think about the pressure related to the air.

4. 4.

   True or False: An isothermal process occurs with a constant temperature.

   • True
   • False

   Hint

   Consider what 'isothermal' means literally.

5. 5.

   A barometer reads an atmospheric pressure of 740 mm of Hg. What is the equivalent pressure in Pascals?

   Hint

   You will convert mm to meters and use the density of mercury.

6. 6.

   If a certain manometer shows 30 m of water, calculate the gauge pressure in Pascal.

   Hint

   Consider using the density of water: 9800 N/m³.