The arrangement shown in the figure measures the velocity V of a gas density
1 kg/
m3 flowing through a pipe. The acceleration due to gravity is 9.81 m/
s2. If the manometric fluid is water (density 1000 kg/
m3) and the velocity V is 20 m/s, the differential head h (in mm) between the two arms of the manometer is____________
- 20.4