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Physics, 02.12.2021 20:20 Joesefsky

Prior to 8-tracks, cassette tapes and CDs there were vinyl records. There were two types: 45's and 33.3's. What do you think these numbers have to do with records on a turntable?

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Prior to 8-tracks, cassette tapes and CDs there were vinyl records. There were two types: 45's and...
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