Thank you for your answer. I think it is a good answer. I don't understand however, why, if magnetic forces don't work, there is still some work done since one magnet is able to attract another magnet. Thank you.
I would like to understand at a microscopic level why magnets attract or repel each other. I understand that there are tiny loops of currents caused by the spin and orbital rotations of electrons, that there are magnetic moments, but I don't understand why magnets attract. How is the magnetic...
Thank you very much for your answer.
It seems clear to me now that heat is energy in transfer. What is thermal energy? Is it the same as heat? If a bullet is stopped suddenly, what energy transfer is taking place since it cannot be heat?
Regards,
There seems to be considerable confusion in the scientific community about thermal energy and heat. I have read several textbooks on thermodynamics and several posts in scientific forums and they certainly don't agree on what is heat and thermal energy. For some: thermal energy is the kinetic...
Thank you for your clear answer.
If I understand well, whether I put zinc or copper in water some of the metal is going to oxidize and form ions in the water. What is causing this oxidation in water? Copper is low in the reactivity series. Why should it oxidize at all in water...
I would like to know why is a solution of ZnSO4 necessary in a Zinc half cell when connected to a Cu half cell. The ions Zn2+ are produced by the zinc electrode so a priori no solution of ZnSO4 is needed and plain water would be enough.
More generally, why a half cell always needs both the...