Size of the Nucleus: An excited 
U* nucleus undergoes fission into two fragments as follows:
U* ? 
Ba + 
KrIf, at the instant of fission, the Ba and Kr fragments are spherical and just barely in contact, what is the electrostatic potential energy of these two fragments? (1 eV = 1.60 × 10-19 J, e = 1.60 × 10-19 C, 1/4??0 = 8.99 ×
109 N ? m2/C2)
A. 230 MeV
B. 240 MeV
C. 250 MeV
D. 260 MeV
E. 270 MeV
Answer: C
Physics & Space Science
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