What is the pressure in atmosphers if the barometer reading is `688 mm Hg`?

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.

A barometer is faulty . When the true barometer reading are 73 cm and 75 cm of Hg , the faulty barometer reads 69 cm and 70 cm respectively (i) What is the total length of the barometer tube? (ii) What is the reading when the faulty barometer reads 69.5 cm? (iii) What is the faulty barometer reading when the true barometer reads 74 cm?

A barometer is faulty . When the true barometer reading are 73 cm and 75 cm of Hg , the faulty barometer reads 69 cm and 70 cm respectively (i) What is the total length of the barometer tube? (ii) What is the reading when the faulty barometer reads 69.5 cm? (iii) What is the faulty barometer reading when the true barometer reads 74 cm?

A barometer is faulty . When the true barometer reading are 73 cm and 75 cm of Hg , the faulty barometer reads 69 cm and 70 cm respectively (i) What is the total length of the barometer tube? (ii) What is the reading when the faulty barometer reads 69.5 cm? (iii) What is the faulty barometer reading when the true barometer reads 74 cm?

The length of a faulty barometer is 90 cm and there is a little air above the mercury. When the atmospheric pressure is 76cm of Hg it reads 74.8 cm. What will be the true atmospheric pressure if the reading on the barometer is 74.3cm ?

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 the assumption made by you. .

At the top of the mountain the temperature is -13^(@)C and the barometer reads 68 cm of Hg. At the bottom the temperature is 27^(@)C and the barometer reads 70 cm of Hg. What is the ratio of the densities of the air at the mountain to that the sea level?

[" A faulty barometer shows "72cm" and the "],[" air column is "10cm," when the true "],[" atmospheric pressure is "76cm" of Hg."],[" The barometer reading will be,when the "],[" length of the air column is "5cm" (in "cm" of "],[Hg" ) "]

At the top of a mountain, the thermometer reads 0^(@)C and the barometer reads 700 mm Hg . At the bottom of the mountain the thermometer reads 30^(@)C and the pressure 760 mm Hg. Compare the density of the air at the top with that at the bottom