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In a Head-On Collision,an Alpha Particle (Z = 2)of Energy 8.20MeV8.20 \mathrm { MeV }

Question 151

Multiple Choice

In a head-on collision,an alpha particle (Z = 2) of energy 8.20MeV8.20 \mathrm { MeV } bounces straight back from a nucleus of charge 80.0e80.0 \mathrm { 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,1/4πε0 = 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

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