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Feynman's 4-3
4-3Concentrate on the process and the decade of energy transfar!
You only need to consider the decade between the release of M & m and the collision of m
After that, no total work would have been done... Tags : physics ç‰©ç† e‹å‹å¦ Views : 13 This video added by HALU0331 .
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