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How tall (in m) must a water-filled manometer be to measure blood pressures as high as 245 mm Hg?

Sagot :

In order to convert the pressure from mmHg to mmH20 (that is, using water instead of mercury), we need to use the following relation:

1 mmHg = 13.6 mmH20

(This relation can be found by calculating the ratio of the densities)

So we have:

[tex]245\text{ mmHg}=245\cdot13.6\text{ mmH20}=3332\text{ mmH20}[/tex]

Therefore the water must be 3.332 meters tall.