Physics Pressure in Fluids and Atmospheric Pressure Numerical4b
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Numericals
Q1 Convert 1mm of Hg into pascal. Take density of Hg=13.6 x 103 kg m-3 and g=9.8 m/s2
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Q2 At a given place, a mercury barometer records a pressure of 0.70m of Hg. What would be the height of water column if mercury in barometer is replaced by water? Take density of mercury to be 13.6 x 103 kg m-3
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Q3 At sea level, the atmospheric pressure is 76cm of Hg. If air pressure falls by 10mm of Hg per 120m of ascent, what is the height of a hill where the barometer reads 70cm of Hg. State the assumption made by you.
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Q4 At sea level, the atmospheric pressure is 1.04 x 105 Pa. Assuming g=10m/s2 and density of air to be uniform and equal to 1.3kg m-3 , find the height of the atmosphere.
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Q5 Assuming the density of air to be 1.295 kg m-3 , find the fall in barometric height in mm of Hg at a height of 107m above the sea level. Take density of mercury = 13.6 x 103 kg m-3
Solution :
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