The velocity of a fluid flowing in a pipe is to be measured by two different Pito-type mer...

The velocity of a fluid flowing in a pipe is to be measured by two different Pito-type mercury manometers shown in Fig. P12-12C. Would you expect both manometers to predict the same velocity for flowing water? If not, which would be more accurate? Explain. What would your response be if air were flowing in the pipe instead of water?