Question

A mcleod gauge has volume of bulb, capillary and tube down to its opening equal to 90 cm3 and a capillary diameter 1mm. calculate the pressure indicated by a reading of 3 cm on the capillary tube

Answer 1

this question is not related music

Answer 2

The pressure indicated by a reading of 3 cm on the capillary tube is 7.85x10⁻³ mm.

Given,

A McLeod gauge has a volume of the bulb, capillary, and tube down to its opening equal to 90 cm³ and a capillary diameter of 1 mm.

To Find,

The pressure indicated by a reading of 3 cm on the capillary tube.

Solution,

The formula for calculating the pressure in terms of mercury level hike is

P = (Ay²)/(V-Ay)

where

V is the volume of the capillary

A is the area of cross-section

Now, substituting the values

V = 90000 mm³, A = π/4(1) = 0.785 mm³, y = 30 mm.

So,

P = 7.85x10⁻³ mm.

Hence, the pressure indicated by a reading of 3 cm on the capillary tube is 7.85x10⁻³ mm.

#SPJ3