When alpha particles are directed onto atoms in a thin metal foil, some make very close...
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When alpha particles are directed onto atoms in a thin metal foil, some make very close collisions with the nuclei of the atoms and are scattered at large angles. If an alpha particles with an initial kinetic energy of 5 MeV happens to be scattered through an angle of 180°, which of the following must have been its distance of the closest approach to the scattering nucleus? (Assume that the metal foil is made of silver, with Z = 50.) 50¹/3 fm A. 1.22 x B. 2.9 x 10-¹4 m C. 1.0 x 10-12 m D. 3.0 x 10-8, E. 1.7 x 107 m m When alpha particles are directed onto atoms in a thin metal foil, some make very close collisions with the nuclei of the atoms and are scattered at large angles. If an alpha particles with an initial kinetic energy of 5 MeV happens to be scattered through an angle of 180°, which of the following must have been its distance of the closest approach to the scattering nucleus? (Assume that the metal foil is made of silver, with Z = 50.) 50¹/3 fm A. 1.22 x B. 2.9 x 10-¹4 m C. 1.0 x 10-12 m D. 3.0 x 10-8, E. 1.7 x 107 m m
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