There are two booklets available on physbang.com to help you revise the equations that you are expected to know by the end of Y10. These booklets were posted a few months ago (click here to read that post and download the booklets) but it has since been pointed out that one equation is missing: sorry … Continue reading Power is the Rate of Change of Energy
Tricky “relationships”
Sometimes in an exam paper you will see a question that reads something like: "State the relationship between speed, distance and time". This can seem confusing unless you know that, in this context, the word "relationship" means equation. So what you are really being asked to do is write the equation that contains the quantities … Continue reading Tricky “relationships”
The Importance of Equations
Writing about A Brief History of Time*, Stephen Hawking freely admitted that he didn't care much for equations. He went on to add, with a hint of humour; "this is partly because it is difficult for me to write them down but mainly because I don't have an intuitive feeling for equations". You may feel … Continue reading The Importance of Equations
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