User bananenheld

20 votes

5 answers

3k views

Wouldn't the cosmic background radiation (CMB) produce drag and thus create a preferential inertial frame?

asked May 7, 2022 at 21:29

11 votes

2 answers

5k views

I don’t understand Noether’s theorem… there is nothing to prove?

asked Aug 14, 2023 at 8:48

7 votes

2 answers

519 views

Do particles (e.g. atoms/electrons) in large molecules that rotate experience pseudoforces?

asked Aug 12, 2023 at 7:43

6 votes

4 answers

513 views

What is the intuition of the expected value of the logarithm and entropy?

asked Jul 9, 2022 at 6:54

5 votes

6 answers

4k views

Why is pressure independent of the mass of the particles of the gas?

asked Jul 9, 2022 at 18:42

5 votes

5 answers

709 views

Does the path of the centre of mass of two planets in a solar system change before and after collision?

asked Jan 30, 2022 at 13:13

5 votes

2 answers

574 views

What exactly does the quantity $\sigma(\theta)$ represent in scattering problems? What is the interpretation of the differential cross section?

asked Aug 11, 2023 at 5:51

4 votes

2 answers

104 views

Why is a wave function $\psi$ needed for QM? Is it possible to make a differential equation involving just the p.d.f. $|\psi|^2$ of a particle? [duplicate]

asked Apr 6, 2023 at 10:40

4 votes

1 answer

163 views

Do neutron stars (or really dense stars) contain more volume inside of them than the expected $V=\frac{4}{3}\pi r^3$?

asked Oct 19, 2023 at 13:49

4 votes

2 answers

168 views

Is there a clear analogy here between volume and entropy? Looking at: $ \frac{dQ}{T} = dS, \frac{dW}{P} = dV$

asked May 1, 2022 at 11:22

3 votes

2 answers

434 views

Understanding the shape of Carnot loop in the $p$-$V$ plane

asked Apr 29, 2022 at 12:55

3 votes

5 answers

2k views

Guidelines to calculate moment of inertia

asked Jan 26, 2022 at 12:45

3 votes

2 answers

264 views

Why is it logical that entropy being extensive suggests that underlying particles are indistinguishable from another and vice versa?

asked Oct 18, 2023 at 12:59

2 votes

2 answers

300 views

Doubts about work-energy theorem and negative gravitational potential energy

asked Jan 26, 2022 at 8:16

2 votes

1 answer

75 views

How does speed of sound change when you extract air out of the experiment?

asked Dec 4, 2021 at 9:45

2 votes

3 answers

198 views

Derivation of entropy, I don't understand the relation $ \frac{\partial S_2}{\partial E_1} = -\frac{\partial S_2}{\partial E_2} $

asked Apr 28, 2022 at 14:52

2 votes

1 answer

230 views

What is the significance of commutator relationships in physics, e.g. $qp-pq = i \hbar$, $R(X, Y)Z = \nabla_X\nabla_Y Z - \nabla_Y\nabla_X Z$, etc?

asked May 2, 2022 at 18:31

2 votes

1 answer

116 views

Coriolis force on surface of neutron star?

asked May 5, 2022 at 20:24

2 votes

2 answers

614 views

Does there exist a Coriolis potential, just like there is a Centrifugal potential? [duplicate]

asked Nov 9, 2022 at 21:16

2 votes

2 answers

350 views

What is the point of the four different thermodynamic potentials?

asked Jun 1, 2022 at 18:11

2 votes

0 answers

44 views

Are there any similarities between the Action $S$ and Angular momentum $L$, since they have they same units? [duplicate]

asked Dec 4, 2022 at 7:53

2 votes

3 answers

195 views

Would a gyroscope have solved the longitude problem?

asked May 9, 2022 at 17:03

2 votes

0 answers

38 views

Will two rotating disks in a fluid be 'attracted' to each other?

asked May 21, 2022 at 11:09

1 vote

3 answers

131 views

Is there no net voltage over an ideal inductor/coil? No voltage drop?

asked May 28, 2022 at 8:30

1 vote

1 answer

254 views

Pressure wave speed $v=\sqrt{\frac{B}{\rho}}$ rearranged $\rho v^2=B$ is similar to kinetic energy: $E_k=\frac{1}{2}mv^2$. Is this a coincidence?

asked May 14, 2022 at 18:51

1 vote

1 answer

195 views

Van der Waals derivation: How is the pressure term exactly derived?

asked Jun 1, 2022 at 12:33

1 vote

1 answer

130 views

Is the least and most efficient amount of work done by a gas by free expansion into vacuum and an isothermal expansion respectively?

asked Jun 4, 2022 at 9:17

1 vote

1 answer

239 views

The entropy given by stefan Boltzmann's law looks remarkably similar to the volume of the sphere; $S(T)=\frac{4}{3}\sigma T^3$

asked May 8, 2022 at 18:48

1 vote

1 answer

84 views

Is 'heat has only sources, no sinks' an equivalent formulation of the second law?

asked May 11, 2022 at 19:50

1 vote

1 answer

37 views

How can the quantisation of the energy of an oscillator be derived from the concept of entropy?

asked Jan 5, 2023 at 14:36

Stack Exchange Network

106 Questions

Wouldn't the cosmic background radiation (CMB) produce drag and thus create a preferential inertial frame?

I don’t understand Noether’s theorem… there is nothing to prove?

Do particles (e.g. atoms/electrons) in large molecules that rotate experience pseudoforces?

What is the intuition of the expected value of the logarithm and entropy?

Why is pressure independent of the mass of the particles of the gas?

Does the path of the centre of mass of two planets in a solar system change before and after collision?

What exactly does the quantity $\sigma(\theta)$ represent in scattering problems? What is the interpretation of the differential cross section?

Why is a wave function $\psi$ needed for QM? Is it possible to make a differential equation involving just the p.d.f. $|\psi|^2$ of a particle? [duplicate]

Do neutron stars (or really dense stars) contain more volume inside of them than the expected $V=\frac{4}{3}\pi r^3$?

Is there a clear analogy here between volume and entropy? Looking at: $ \frac{dQ}{T} = dS, \frac{dW}{P} = dV$

Understanding the shape of Carnot loop in the $p$-$V$ plane

Guidelines to calculate moment of inertia

Why is it logical that entropy being extensive suggests that underlying particles are indistinguishable from another and vice versa?

Doubts about work-energy theorem and negative gravitational potential energy

How does speed of sound change when you extract air out of the experiment?

Derivation of entropy, I don't understand the relation $ \frac{\partial S_2}{\partial E_1} = -\frac{\partial S_2}{\partial E_2} $

What is the significance of commutator relationships in physics, e.g. $qp-pq = i \hbar$, $R(X, Y)Z = \nabla_X\nabla_Y Z - \nabla_Y\nabla_X Z$, etc?

Coriolis force on surface of neutron star?

Does there exist a Coriolis potential, just like there is a Centrifugal potential? [duplicate]

What is the point of the four different thermodynamic potentials?

Are there any similarities between the Action $S$ and Angular momentum $L$, since they have they same units? [duplicate]

Would a gyroscope have solved the longitude problem?

Will two rotating disks in a fluid be 'attracted' to each other?

Is there no net voltage over an ideal inductor/coil? No voltage drop?

Pressure wave speed $v=\sqrt{\frac{B}{\rho}}$ rearranged $\rho v^2=B$ is similar to kinetic energy: $E_k=\frac{1}{2}mv^2$. Is this a coincidence?

Van der Waals derivation: How is the pressure term exactly derived?

Is the least and most efficient amount of work done by a gas by free expansion into vacuum and an isothermal expansion respectively?

The entropy given by stefan Boltzmann's law looks remarkably similar to the volume of the sphere; $S(T)=\frac{4}{3}\sigma T^3$

Is 'heat has only sources, no sinks' an equivalent formulation of the second law?

How can the quantisation of the energy of an oscillator be derived from the concept of entropy?