cf9月王牌幸运星网址:2.8+2.8GeV合多少焦耳?

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1Gev = 2^30 * 1.6 * 10^(-19) = 3.2 * 10 ^11 J
我没有理解你的意思,下面供参考:
2.8GeV = 2.8 * 3.2 * 10^11 J = 8.96 * 10^11 J
(2.8+2.8)Gev = 5.6 Gev = 1.792 * 10^12 J

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