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PHYSICS CH3 Fluids — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9SciencePHYSICS CH3 Fluids2 Marks
Question
Higher Order Thinking Skill.

How high does the mercury barometer stand on a day when atmospheric pressure is 98.6 kPa?

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Answer

$\begin{aligned} & H =\frac{ P _{\max }}{ P _{ Hg }}=98.6 \times 10 \times 10 \times 10 \\ & =\frac{( N / m )^2}{13.6 \times 10 \times 10 \times 10 Kg / m ^3} \\ & =\frac{9.8 m }{ s ^2} \\ & =740 mm \end{aligned}$

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