Pressure Equation

This lesson covers:

  1. What causes pressure
  2. The pressure equation: p=FAp=\frac{F}{A}

True or false? Only solids and liquids can exert pressure.

True

False

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The term 'fluid' can refer to either a l or a g.


Fluids exert pressure on their containers.


The liquid or gas particles c with the walls of the container. These collisions exert a force onto the walls of the container, and this force is pressure.

iquid
as
ollide

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What is the formula for pressure?

P=FA​
P=AF​
P=FA

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The units for pressure are:

Kilograms (kg)

Pascals (Pa)

Metres squared (m2)

Newtons (N)

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A box has a weight of 200 N, and rests on the floor.


The bottom of the box has an area of 0.5 m2. 


What is the pressure exerted by the box on the floor?

400

Pa

Pa

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A television has a weight of 120 N and rests on a table.


The pressure exerted by the television on the table is 300 Pa.


What is the area of the bottom of the television?

0.4

m2

m2

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Which of the following is correct?

Solids, liquids, and gases, all exert pressure

Only solids and liquids exert pressure

Only liquids and gases exert pressure

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