Modern Physics for Scientists and Engineers
Modern Physics for Scientists and Engineers
4th Edition
ISBN: 9781133103721
Author: Stephen T. Thornton, Andrew Rex
Publisher: Cengage Learning
Question
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Chapter 4, Problem 14P

(a)

To determine

The speed of the electron according to the planetary model.

(b)

To determine

The total mechanical energy.

(c)

To determine

Whether values of mechanical energy and speed reasonable.

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The radius of a hydrogen nucleus is believed to be about 1.2 x 10-15 m. (a) If an electron rotates around the nucleus at that radius, what would be its speed according to the planetary model? (b) What would be the total mechanical energy? (c) Are these reasonable?
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Myons are little fellows similar to electrons in terms of their charge. But they are somewhat bigger with a mass 206 times larger than the electrons. Compute the energy of a hydrogen-like atom with a myon on its orbit! Compare the kinetic energy with the (Coulomb) potential energy and the gravitational energy (as the myon’s mass is much more than the electron’s mass).
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