Physics › Section H · Fluids › Topic H.1
Fluids, density, and pressure
Air and water surround you, press on you and hold you up, yet you rarely notice. Density and pressure are the two quantities that let you describe a fluid, and almost everything in fluid physics is built from them.
In this topic
- What counts as a fluid
- Density
- Some standard densities
- Worked example: identifying a metal bar
- Worked example: the air in a room
- Pressure
- Units of pressure
- Worked example: a stiletto and an elephant
- The force of the atmosphere
- Common mistakes to avoid
- Key takeaways
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