In a Scattering Experiment,an Alpha Particle Initially with 8

question 43

Multiple Choice

In a scattering experiment,an alpha particle initially with 8.00 MeV of kinetic energy can approach the nucleus of an unknown element to within 20.0 fm.If the only force between the alpha particle and the nucleus of the unknown element is the electric force,then what initial kinetic energy is required for a the alpha particle to approach within 30.0 fm of the nucleus?

• A)4.67 MeV
• B)6.00 MeV
• C)5.33 MeV
• D)5.67 MeV

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