106 ❯ STEP 4. Review the Knowledge You Need to Score High
Vacuum
Sealed end
Mercury
h
Air pressure Air pressure
Mercury
Figure 8.1 The mercury barometer.
Pgas
h
Mercury
Figure 8.2 The manometer.
106 ❯ STEP 4. Review the Knowledge You Need to Score High
Vacuum
Sealed end
Mercury
h
Air pressure Air pressure
Mercury
Figure 8.1 The mercury barometer.
Pgas
h
Mercury
Figure 8.2 The manometer.