Answer: A proton with initial kinetic energy 50.0 eV

Chapter 40, Problem 40.32

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A proton with initial kinetic energy 50.0 eV encounters a barrier of height 70.0 eV. What is the width of the barrier if the probability of tunneling is 8.0 * 10-3 ? How does this compare with the barrier width for an electron with the same energy tunneling through a barrier of the same height with the same probability?

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