at sea level the barometer reads 760 mm of hg. when top of the mountain it reads 230 mm of hg . find the height of the mountain
Answers
Answer:HERE IS YOUR ANS
Explanation:
Given take the density of mercury to be 13.6 g cm-3 and the density of air, 1.23 x 10-3 g cm-3.
Estimate the height of the mountain?
Pressure difference in mercury, Pmercury = pgh
= 13600 x 10 x (0.76 – 0.23)
= 72080 Pa
Pressure difference, Pair = pgh
72080 = 1.23 x 10 x h
h = 5860 m
In general, barometer can be used to measure altitude as height increases, height of mercury column will decreases. Of course same calibration has to be done. It is not practical to bring around a mercury barometer as its liquid, heavy and poisonous etc.
An aneroid barometer (no mercury inside though) is used to measure altitude more accurately.
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