User Pancake_Senpai

16 votes

4 answers

7k views

Why is the chemical potential of a photon gas 0 (mathematical argument)?

asked Aug 31, 2020 at 10:43

11 votes

4 answers

4k views

Is potential difference the same across each branch in a parallel circuit under ALL circumstances?

asked Aug 2, 2017 at 12:04

6 votes

4 answers

2k views

Why doesn't gravitational potential energy cancel out?

asked Nov 16, 2017 at 8:55

6 votes

2 answers

4k views

Does Snell's law still apply after total internal reflection has occurred?

asked Jun 18, 2017 at 17:47

4 votes

1 answer

3k views

What does "singlet state" mean in the context of colour charge, and do red, green and blue colours cancel?

asked Jan 5, 2021 at 11:25

4 votes

1 answer

2k views

Where do Cooper pairs fit in the superconducting density of states?

asked Feb 8, 2022 at 12:40

3 votes

1 answer

135 views

A space ship has maximum proper acceleration of $a_0$. How close can it fall freely towards a black hole before it can no longer accelerate away?

asked Jun 16, 2021 at 18:33

3 votes

2 answers

3k views

What does phase velocity physically represent, and why can it be superluminal? [duplicate]

asked May 17, 2019 at 18:58

3 votes

3 answers

270 views

Does an asteroid superpose in space?

asked Jul 5, 2017 at 17:21

3 votes

2 answers

1k views

Why do moving water droplets form on the surface of a very hot pan? [duplicate]

asked Jul 15, 2017 at 17:50

3 votes

2 answers

1k views

Why does discharging a capacitor give a higher power output than using a battery?

asked Jul 31, 2017 at 18:15

2 votes

3 answers

3k views

What causes magnetism?

asked Aug 3, 2017 at 10:05

2 votes

5 answers

4k views

Conservation of mass in relativistic collisions?

asked Nov 13, 2018 at 19:47

2 votes

3 answers

2k views

$Q$-factor for damped oscillator (not driven)?

asked Jan 2, 2019 at 14:11

2 votes

3 answers

1k views

Deriving an integral in a mechanics problem (massless string holding up a disk)

asked Mar 13, 2019 at 12:30

2 votes

2 answers

458 views

Reconciling classical mechanics with special relativity - energy lost as heat in an inelastic collision

asked Mar 20, 2019 at 15:35

2 votes

1 answer

2k views

What force caused the Earth to have a tangential velocity to its circular motion around the Sun?

asked Jul 10, 2017 at 13:58

2 votes

1 answer

460 views

Why does the frictional centripetal force create a moment around a leaning bike?

asked Jul 11, 2017 at 20:32

2 votes

1 answer

1k views

Diffraction according to Huygens principle - struggling with the concept of diffraction being caused by small point source wavelets

asked Jun 22, 2017 at 18:08

2 votes

3 answers

937 views

Proof that $v=\frac{dE}{dp}$ at relativistic speeds?

asked Oct 14, 2019 at 15:43

2 votes

1 answer

1k views

Putting a charged sphere in a uniform electric field - can we superpose the individual fields to find the resulting one?

asked Dec 24, 2019 at 10:23

2 votes

1 answer

758 views

Is Clausius' inequality a statement of the second law of thermodynamics?

asked Mar 31, 2020 at 19:36

2 votes

1 answer

60 views

What is the physical interpretation of the Helmholtz free energy for an isothermic, irreversible process?

asked Apr 6, 2020 at 8:44

2 votes

3 answers

1k views

How can we calculate the change in entropy of a block and its surroundings, when the block is placed in a heath bath?

asked Apr 7, 2020 at 11:31

2 votes

2 answers

5k views

What is the partition function of a classical harmonic oscillator?

asked Oct 27, 2020 at 11:18

2 votes

1 answer

212 views

Is the density of states Lorentz invariant?

asked Jan 3, 2021 at 12:14

2 votes

1 answer

173 views

Intuiting qualitatively the shapes of the eigenfunctions of a finite well-like potential, using the infinite well eigenfunctions as an inspiration

asked Jul 14, 2020 at 13:43

1 vote

2 answers

317 views

What makes electron scattering more useful than alpha particle scattering for resolving the structure of the nucleus?

asked Jun 7, 2021 at 9:18

1 vote

2 answers

123 views

Is the rest mass of a system invariant even if it is a function of time?

asked Apr 27, 2021 at 17:28

1 vote

1 answer

533 views

Why do reflection gratings work?

asked Jun 24, 2020 at 16:12

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67 Questions

Why is the chemical potential of a photon gas 0 (mathematical argument)?

Is potential difference the same across each branch in a parallel circuit under ALL circumstances?

Why doesn't gravitational potential energy cancel out?

Does Snell's law still apply after total internal reflection has occurred?

What does "singlet state" mean in the context of colour charge, and do red, green and blue colours cancel?

Where do Cooper pairs fit in the superconducting density of states?

A space ship has maximum proper acceleration of $a_0$. How close can it fall freely towards a black hole before it can no longer accelerate away?

What does phase velocity physically represent, and why can it be superluminal? [duplicate]

Does an asteroid superpose in space?

Why do moving water droplets form on the surface of a very hot pan? [duplicate]

Why does discharging a capacitor give a higher power output than using a battery?

What causes magnetism?

Conservation of mass in relativistic collisions?

$Q$-factor for damped oscillator (not driven)?

Deriving an integral in a mechanics problem (massless string holding up a disk)

Reconciling classical mechanics with special relativity - energy lost as heat in an inelastic collision

What force caused the Earth to have a tangential velocity to its circular motion around the Sun?

Why does the frictional centripetal force create a moment around a leaning bike?

Diffraction according to Huygens principle - struggling with the concept of diffraction being caused by small point source wavelets

Proof that $v=\frac{dE}{dp}$ at relativistic speeds?

Putting a charged sphere in a uniform electric field - can we superpose the individual fields to find the resulting one?

Is Clausius' inequality a statement of the second law of thermodynamics?

What is the physical interpretation of the Helmholtz free energy for an isothermic, irreversible process?

How can we calculate the change in entropy of a block and its surroundings, when the block is placed in a heath bath?

What is the partition function of a classical harmonic oscillator?

Is the density of states Lorentz invariant?

Intuiting qualitatively the shapes of the eigenfunctions of a finite well-like potential, using the infinite well eigenfunctions as an inspiration

What makes electron scattering more useful than alpha particle scattering for resolving the structure of the nucleus?

Is the rest mass of a system invariant even if it is a function of time?

Why do reflection gratings work?