A Proton (Charge = E,mass = 1

question 55

Multiple Choice

A proton (charge = e,mass = 1.67  10^-27 kg) with initial kinetic energy 3 MeV is fired head-on towards a fixed stationary uranium nucleus (charge 92e,mass = 3.95  10^-25 kg) .Calculate how close to the uranium the proton gets before it comes to rest.(Assume the uranium nucleus does not move.)

• A)2.75  10⁵ m
• B)4.40  10^-8 m
• C)4.40  10^-14 m
• D)2.10  10^-7 m
• E)none of the above

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