Question

The barometric pressure on a winter day in Minnesota was found tobe

Answer 1

Answer:

1015.92 cmH₂O

Explanation:

The pressure of a fluid (liquid or gas) can be measured by the force that it does in a column of a standard liquid. When the liquid is the mercury, the pressure is measured in units of Hg, and when the column is filled with water, the value is obtained in units of H₂O.

The value depends on the density and the specific weight of the liquid. To convert mmHg to cmH₂O:

1 mmHg ----------- 1.36 cmH₂O

747 mmHg ------ x

By a simple direct three rule:

x = 1015.92 cmH₂O