Question: Use the uncertainty principle to show that if an electron were present in the nucleus (r 10-15m), its kinetic energy (use relativity) would be

Use the uncertainty principle to show that if an electron were present in the nucleus (r ≈ 10-15m), 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.)

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