Chapter 10, Problem 11QP

Interpretation Introduction

Interpretation:

The reason for the simultaneous decrease and increase of barometer reading (pressure) in any part of the world is to be explained.

Concept introduction:

The decrease in air pressure due to the temperature difference between two areas results in air rushing from the area with the higher pressure.

A barometer is an instrument, which is used to determine the atmospheric pressure via the height of ascent or descent of the mercury level in the tube.

The formula for calculating pressure via barometer is given as follows:

$\text{Pressure (}P\text{) = }h\rho g$

Here, $h$ is the height of the mercury column, $\rho$ is the density of the mercury, and $g$ is the acceleration due to gravity.