Lesson: Atmospheric Pressure

Physics

In this lesson, we will learn how to describe atmospheric pressure using various units, including the height of a mercury column.

Video

11:04

Q1:

The apparatus shown in the diagram is used to measure atmospheric pressure. Which of the following occupies region A of the test tube?

Q2:

A bar is a unit that is defined as being equal to Pa. Convert a pressure of 0.48 bar to a pressure in pascals.

Q3:

A torr is a unit that is defined as being equal to the pressure produced by 1 mm of mercury.

Convert a pressure of 455 torr to a pressure in pascals.

Convert a pressure of 455 torr to a pressure in bar.

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