A proton and an antiproton, both at rest, annihilate. The total energy released is (c = 3 10^8 m/s):

  1. 1.5 10^-10 J
  2. 3.01 10^-10 J
  3. 6.01 10^-10 J
  4. 1 10^-18 J
Answer

B) 3.01 10^-10 J

E = 2mc^2 = 2 1.67 10^-27 (3 10^8)^2 = 3.01 10^-10 J. SLO P-11-F-28 · Understanding

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