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Vacuum

255 bytes added, 10:39, 25 December 2019
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:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Vacuum, page 72, GCSE Physics, Pearson Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Vacuums, pages 152, Gateway GCSE Physics, Oxford, OCR '']
==Beyond the Curriculum==
{{#ev:youtube|https://www.youtube.com/watch?v=_rJOSDgDG0A}}
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