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Equations

1

Equations in Physics

Equations are an important part of physics:

  • They allow us to predict what will happen if we know a few bits of information

  • They are universal, so they work the same way anywhere in the Universe

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2

Re-arranging Equations / Changing the Subject

Re-arranging equations is an essential skill to master:

  • Decide which term you want to make the subject of the equation

  • Whatever you do to the left-hand side of the equation you do to the right-hand side too

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Re-arranging Equations: Example A

A straightforward example of re-arranging an equation.

4

Re-arranging Equations: Example B

A slightly more complex equation that is re-arranged.

5

Mathematical Symbols

This is a quick recap of the mathematical symbols you may come across in GCSE Physics.

6

Greek Letters

We quickly run out of letters to represent all the quantities we use at GCSE. We use letters from the Greek alphabet and here I run through the new symbols you will be using.

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