# Search results

1. ### Reference Book Griffiths-Introduction to Electrodynamics

I am looking for a reference book to use besides Griffiths. I find the explanations in Griffiths to be disconnected, and I have to work very very hard to make out what he is trying to explain. And then when I try the problems in the book I am handicapped (completely stuck). Most of the books I...
2. ### Modern physics question

A particle of rest mass m is accelerated to a kinetic energy K in a nuclear reactor. This particle is incident on a stationary target particle, also of rest mass m. a) Show that the speed of the centre of mass (that is the speed of the frame in which the total momentum is zero) is \gamma...
3. ### Electric permittivity of copper

Can anybody please tell me where I can find the value for the relative permittivity of copper with respect to air. Thanks
4. ### Modern Physics Problem

The neutral pion is an elementary particle of the meson family that has a rest mass energy of 135 MeV. This particle is unstable and decays into two photons ("light particles" of no rest mass and energy E=pc). Consider now the following situation: a neutral pion has a kinetic energy of 270 MeV...
5. ### Modern physics question

The free neutron is known to decay into a proton, an electron, and an antineutrino v' (of negligible rest mass) according to n-->p+e+v'. The decay products are measured to have a total kinetic energy of 0.781+/-0.005 MeV. Show that this observation is consistent with the excess energy predicted...
6. ### Speed of a particle

Can you please give me a few pointers on this problem. A particle of rest mass m is accelerated to a kinetic energy K in a nuclear reactor. This particle is incident on a stationary target particle, also of rest mass m. a) Show that the speed of the centre of mass (that is the speed of the...
7. ### Modern Physics Question

Hello Everyone, Can you please help me with this problem. I am not looking for a complete solution to it, I just need a few guidelines on how to proceed. Here it is, Let us consider a perfectly inelastic collision between two protons: an incident proton with mass m, kinetic energy K, and...
8. ### Solved Problems Modern Physics

I am looking for a solutions manual or a book that has a lot of solved problems in modern physics. If anybody knows can you please recommend it to me. P.S. The book I am using now is Modern Physics by Serway, Moses, Moyer. Thank you
9. ### Maxwell's Stress Tensor

Consider an infinite parallel plate capacitor with the lower plate (at z=-d/2) carrying the charge density- \sigma and the upper plate (at z=d/2) carrying the charge density \sigma. Determine all nine elements of the stress tensor in the region between the plates. Display your answer as a...
10. ### Modern Physics problem

Question: Show that the wave equation is in not covariant with respect to Gallilean transformations, given the function y=Asin(2pi(x/lambda - ft)) My main question is inorder to show the covariance of a law, should I apply the law on the primed variables and show that it is satisfied by...