The useful idea
- The useful idea
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
- How it works
Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.
- Why it matters
Various units are used to express pressure.
Why this matters
Look for Pressure the next time you notice this pattern in everyday life.
Try this
Look for Pressure the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Pressure?
- How it works
- The useful idea — correct
- Why it matters
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.