An Excited U^* Nucleus Undergoes Fission into Two Fragments,as

question 5

Multiple Choice

An excited U^* nucleus undergoes fission into two fragments,as shown: U^* → Ba + Kr The following atomic masses are known: Kr: 91.926270 u Ba: 143.922845 u U^*: 236.045563 u
Assume,at a given instant,that the two fission fragments are spherical,just barely in contact,and carry spherically symmetric charge distributions.At that instant,what is the electrostatic interaction energy of the two fragments,in MeV? (1 u = 1.6605 × 10^-27 kg = 9

• A) 230 MeV
• B) 240 MeV
• C) 250 MeV
• D) 260 MeV
• E) 270 MeV

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