Question
As a storm front moves in, you notice that the column of mercury in a barometer rises to only $736 \mathrm{~mm}$. What is the air pressure in $\mathrm{kPa}$ ?
Step 1
The height of the mercury column (h) is given as 736 mm, which we convert to meters to get 0.736 m. The density of mercury (ρ) is 13600 kg/m³ and the acceleration due to gravity (g) is 9.81 m/s². Show more…
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As a storm front moves in, you notice that the column of mercury in a barometer rises to only 736 mm. (a) What is the air pressure? (b) If the mercury in this barometer is replaced with water, to what height does the column of water rise? Assume the same air pressure found in part (a).
As a storm front moves in, you notice that the column of mercury in a barometer rises to only $736 \mathrm{mm}$. (a) What is the air pressure? (b) If the mercury in this barometer is replaced with water, to what height does the column of water rise? Assume the same air pressure found in part (a).
The weather report indicates that the barometric pressure is 742 mm of mercury. What is the atmospheric pressure in kPa? Use the specific gravity of mercury, which is 13.6.
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