Atomic Nucleus: In a head-on collision, an alpha particle (Z = 2) of energy 8.20 MeV bounces straight back from a nucleus of charge 80.0 e. How close were the centers of the objects at closest approach? (1 eV = 1.60 × 10-19 J, e = 1.60 × 10-19 C, 1/4??0 = 8.99 × 109 N ? m2/C2)
A. 2.81 × 10-14 m
B. 3.39 × 10-12 m
C. 6.56 × 10-15 m
D. 2.17 × 10-14 m
Answer: A
Physics & Space Science
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