Recent content by BjarkeTN

I have a short question which I have been discussing with a fellow student and a professor. The question (which is not a homework question!), is as follows: If you shift all the energies E_i \to E_i + E_0 (thus also shifting the mean energy U \to U + E_0), does the entropy of the system remain...

The trick here is to find an expression for the torque around the pivot from which the mass is dangling. The rods directly connected to this point exert no torque around the point because the "lever arm" is zero. The tension in the upper rod, however, does contribute. We see that since the...

Hi all, what sort of physics/mathematics related humor do you enjoy? Be it comics, TV shows, humorous books, music... I personally like the ''usual'' stuff, Tom Lehrer, The Big Bang Theory (though a bit hit-and-miss), XKCD, SMBC. But I'd love to hear any recommendations!