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Untitled Prezi

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ishdeep kullar

on 7 March 2013

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9.5 - Relationships: Pressure,
Volume, and Temperature Fluids under pressure Why are most containers that hold gases
under pressure curved? Why the barrel of a bicycle heat up
when pumping a tire? Where are these fluids properties used? We use the properties fluids in scuba tanks and other rigid containers.

All of these containers have a large amount of gas which is compressed in a small volume.

The container is made out of metal so that it does not burst. When a gas is pressured in a closed system, its volume decreases.

When liquids are under pressure, their volume decreases as well, however the quantity being so small it is barely noticeable.

This happens as the particles of a liquid are much closer together than the particles of a gas. Curved containers provide the maximum volume for minimum surface area.

Curved containers minimize the total surface area of the container for a given volume and also minimize the total amount of material required to construct the container. Pushing the pump also forces the air into a smaller volume.

This compression causes more flow among the particles of air and
between the particles and the cylinder walls. This increase in
flow not only causes the pressure to increase, it also causes the
temperature to rise. Why is heating aerosol containers
so dangerous?
As the temperature inside the pressurized can increases, so does the speed of the particles.
As the particles move faster, they hit the inside walls of the can with increased force, causing the pressure on the walls to build up.
Eventually, the pressure could become so great that the walls of the container and eventually explode.
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