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Below are the previews for the slide in Topic 15 - Forces and Matter. If you click on them, you can see larger versions. If you are on a computer you can press the left and right arrows to move. You can also click the arrows to the left and right of the screen.

Powerpoint Description:

This slideshow covers: an introduction to forces, force and extension in a spring, Hooke's Law, the limit of proportionality, elastic and plastic deformation, elastic potential energy, atmospheric pressure, how to calculate pressure, pressure in fluids and why it depends on depth, why objects float, upthrust in fluids.

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