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UM UGM 2007 Kode 731 Kelajuan partikel yang memiliki momentum linier 5 MeV/c dan energi relativistik total 10 MeV adalah ….

UM UGM 2007 Kode 731

Kelajuan partikel yang memiliki momentum linier 5 MeV/c dan energi relativistik total 10 MeV adalah ….

  1. 0,25c

  2. 0,5c

  3. begin mathsize 14px style 1 half square root of 3 end style

  4. begin mathsize 14px style fraction numerator 1 over denominator square root of 3 end fraction straight c end style

  5. c

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Y. Maghfirah

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begin mathsize 14px style straight E subscript straight T superscript 2 equals straight E subscript 0 superscript 2 plus straight p squared straight c squared straight E subscript 0 superscript 2 equals straight E subscript straight T superscript 2 minus straight p squared straight c squared straight E subscript 0 superscript 2 equals 10 squared minus fraction numerator 5 squared straight c squared over denominator straight c squared end fraction equals 75 straight E subscript straight T equals fraction numerator straight E subscript 0 over denominator square root of 1 minus straight v squared over straight c squared end root end fraction straight E subscript straight T superscript 2 equals fraction numerator straight E subscript 0 superscript 2 over denominator 1 minus straight v squared over straight c squared end fraction 100 equals fraction numerator 75 over denominator 1 minus fraction numerator straight v squared straight space over denominator straight c squared end fraction end fraction 100 minus 100 straight v squared over straight c squared equals 75 100 straight v squared over straight c squared equals 25 straight v squared over straight c squared equals 25 over 100 straight v equals space 0 comma 5 end style

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