Half Life Questions - GCSE Physics

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***Half of 1250 is 625, not 675 like I claim in the video. D'oh ***
A low budget video in which I take you through the style of questions you might face about half-life. This one is a bit drier, but I promise you it'll help tackle questions students find challenging!
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Thank you very much for this excellent video! I have finally managed to understand half-life

learnwithmariam