In Thermodynamics (1st ed.) by James Luscombe (2018, p. 12), the zeroth law is used to show the existence of empirical temperature (of fluids in thermal equilibrium) as a function of pressure and volume. This notion of temperature is a logical consequence of the zeroth law. Am I right? However, i...

According to the standard quantum mechanics, quantum states are one-dimensional subspaces of a separable Hilbert space. In practice, this Hilbert space is $L^2(M)$ where $M$ is the classical configuration space of the system. From this follows that for any state function $\psi_1 \in L^2(M)$ and f...

We know angular momentum is defined as $mvr$. In the context of Lagrangians and Noether's theorem, this definition pops up as the conserved quantity due to rotational symmetry of the system. Is there anyway to justify this definition without the use of Lagrangians and Noether's theorem? As in if ...

This is a question on work energy theorem in rotational motion with its answer for the first part of the question. Here, I have a doubt about why is the book taking the translational work done by the gravity and not the rotational work done by the gravity? I can not understand this question, ple...