Question

At sea level the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of HG per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm Hg . State assumption made by you .

Answer 1

Answer:

720m

Explanation:

Atmospheric pressure falls linearly with ascent.

Here atmospheric pressure at sea level =76cm of Hg

For every 10mm=1cm decrease there is a increase of 120m so, at 70cm of Hg

height=76−70=6×120=720m

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Answer 2

Answer:

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Q.At sea level the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of HG per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm Hg . State assumption made by you .

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Atmospheric pressure falls linearly with ascent.

Here atmospheric pressure at sea level =76cm of Hg

For every 10mm=1cm decrease there is a increase of 120m so, at 70cm of Hg

height=76−70=6×120=720m

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