Download e-book for kindle: 200 Puzzling Physics Problems: With Hints and Solutions by P. Gnädig, G. Honyek, K. F. Riley

By P. Gnädig, G. Honyek, K. F. Riley

This publication will improve a student's seize of the legislation of physics through employing them to sensible occasions, and difficulties that yield extra simply to intuitive perception than brute-force tools and complicated arithmetic. those exciting difficulties, selected virtually completely from classical (non-quantum) physics, are posed in available non-technical language requiring the coed to pick the perfect framework within which to examine the location and judge which branches of physics are concerned. the extent of class had to take on many of the 200 difficulties is that of the phenomenal institution scholar, the great undergraduate, or useful graduate scholar. The booklet can be invaluable to undergraduates getting ready for 'general physics' papers. it really is was hoping that even a few physics professors will locate the more challenging questions demanding. in contrast, mathematical calls for are minimum, and don't transcend uncomplicated calculus. This interesting ebook of physics difficulties should still turn out instructive, hard and enjoyable.

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Example text

P197* An electron is enclosed in a large rectangular box. Estimate the order of magnitude of the thickness of the layer (at the bottom of the box) which, as a result of gravitational effects, is occupied by the electron. P198* Classically, the Coulomb field of an atomic nucleus could confine an electron to that nucleus. However, the Heisenberg uncertainty principle prescribes such a high kinetic energy for an electron enclosed in such a small space that it would escape from the nucleus in any case.

Gravity can be ignored. P194 In an experiment on Compton scattering, stationary electrons are bombarded by photons whose energy is equal to the rest energy of an electron. For events in which the scattered photon and the recoil electron have momenta of the same magnitude, find the angle between them. What is the speed of the recoil electron in this case? P195 X-ray photons are scattered through an angle of 90° by electrons initially at rest. What is the change in the wavelength of the photons? P196 Imagine a 'classical electron' as a small, spherical ball.

What is the change in the wavelength of the photons? P196 Imagine a 'classical electron' as a small, spherical ball. What is its minimum radius, if its electrostatic energy is not to be greater than its total rest energy, mc2 ? What is its angular velocity if its angular momentum is h/(4n)? To what 'equatorial speed' does this correspond, if the whole of the electron's rest energy is provided by the electrostatic field? P197* An electron is enclosed in a large rectangular box. Estimate the order of magnitude of the thickness of the layer (at the bottom of the box) which, as a result of gravitational effects, is occupied by the electron.

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