Each of the following statements concerns a mercury barometer such as that shown in Figure 10.2. Identify any incorrect statements and correct them.
(a) The tube must be 1cm2 in cross-sectional area.
(b) At equilibrium the force of gravity per unit area acting on the mercury column equals the force of gravity per unit area acting on the atmosphere.
(c) The column of mercury is held up by the vacuum at the top of the column.
(d) If you took the mercury barometer with you on a trip from the beach to high mountains, the height of the mercury column would increase with elevation.

Transcribed Image Text:

Pressure exerted by Hg column on Hg surface Vacuum Hg Pressure exerted by atmosphere on Hg surface