1.A barometer is used to measure atmospheric pressure and is filled with a high

Question

1.A barometer is used to measure atmospheric pressure and is filled with a high density fluid.The pressure, P is measured by a barometer is the height of the fluid column,h, times the density of the liquid,p, times the acceleration due to gravity, g or P=pgh.

This equation is solved for the height: h=P/pg. Find the height to which the liquid column will rise for pressures from 0 to 100 kPa for two different barometers. Assume that the first uses mercury , with a density of 13.56 g/cm^3(13,560 kg/m^3) and the second uses water, with a density 1.0 g/cm^3 (1000 kg/m^3). The accelleration due to gravity is 9.81 m/s^2. Your answer should be a two dimensional matrix.

Explanation / Answer

Using the given expression and substituting the values of pressure 100*103 Newton per meter square and acceleration due to gravity as 9.81 metre per seconds2 and the density of fluid in the barometer.

We found that

Height of mercury column = h1 = 0.7517 metres and height of water column = 10.1936 metres, the variation in the values is because of the adhesion and cohesion properties of the fluid, mercury is strong in cohesion and which shows capillary drop.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.