Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
28
Quantum Mechanics of Atoms
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28-2: Wave Function, Double-Slit
28-3: Uncertainty Principle
28-6 to 28-8: Quantum Numbers, Exclusion Principle
28-9: X-Rays
28-11: Lasers

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 14
Q

Use the uncertainty principle to show that if an electron were present in the nucleus (r1015 m)(r \approx 10^{-15} \textrm{ m}), its kinetic energy (use relativity) would be hundreds of MeV. (Since such electron energies are not observed, we conclude that electrons are not present in the nucleus.) [Hint: Assume a particle can have an energy as large as its uncertainty.]

A
200 MeV200 \textrm{ MeV}
Giancoli 7th Edition, Chapter 28, Problem 14 solution video poster
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