User Pancake_Senpai

1 vote

1 answer

2k views

Calculating the Universe's change in entropy for irreversible processes involving a system and a heat bath

asked Oct 10, 2020 at 14:37

1 vote

2 answers

963 views

Why are diffracted wave fronts drawn with curved edges in textbook diagrams, when according to Huygen's principle they should be straight lines?

asked Jun 23, 2017 at 10:09

1 vote

2 answers

381 views

Why are electrons written with a proton number?

asked Jun 29, 2017 at 6:20

1 vote

3 answers

6k views

Are thermistors and filament bulbs ohmic?

asked Jul 2, 2017 at 12:03

1 vote

4 answers

14k views

Deriving the equation for kinetic energy

asked Jul 12, 2017 at 11:16

1 vote

1 answer

2k views

Forces acting on the water in a bucket when the bucket is vertically spun on a string?

asked Jul 11, 2017 at 17:53

1 vote

2 answers

272 views

What makes a collision 2D?

asked Jan 10, 2019 at 20:34

1 vote

1 answer

276 views

Why does the Universe resist change?

asked Aug 4, 2017 at 16:33

1 vote

1 answer

1k views

The impact of refraction on a double slit interference pattern

asked Sep 30, 2017 at 13:43

0 votes

1 answer

623 views

Potential energy of two colliding particles in space

asked Oct 27, 2017 at 14:29

0 votes

3 answers

340 views

Can work done ever be negative?

asked Sep 21, 2017 at 16:17

0 votes

4 answers

2k views

Why do we differentiate a 4 vector with respect to proper time to obtain 4-velocity?

asked Dec 31, 2018 at 20:55

0 votes

1 answer

269 views

Does the associated colour of a spectral class (red and class M, for example) come from the peak black body radiation of stars in that class?

asked Jan 23, 2018 at 19:50

0 votes

2 answers

1k views

A train passes an observer on a platform at half the speed of light. Who measures the proper time?

asked Oct 30, 2018 at 20:59

0 votes

3 answers

938 views

Why is the net torque 0 when pushing a block across a table?

asked Jul 15, 2017 at 13:52

0 votes

1 answer

13k views

How do you identify the elastic limit and yield point on a stress/strain graph?

asked Jul 3, 2017 at 21:45

0 votes

1 answer

1k views

Why is the potential difference across a component not constant? [duplicate]

asked Jul 4, 2017 at 15:21

0 votes

2 answers

513 views

Why doesn't limiting friction contradict Newton's Third Law?

asked Jul 5, 2017 at 12:24

0 votes

2 answers

352 views

Struggling with a mechanics exam question regarding a circular frictionless slope [closed]

asked Jul 1, 2017 at 23:50

0 votes

0 answers

778 views

Why, when using an ammeter in a circuit powered by DC, does the current sometimes read as negative?

asked Jul 2, 2017 at 11:16

0 votes

0 answers

89 views

Intensity of a grating pattern in the limit of infinite slits

asked Oct 12, 2020 at 20:34

0 votes

2 answers

96 views

Why does $\vec{B}\cdot\frac{\partial \vec{B}}{\partial t}=\frac{1}{2}\frac{\partial}{\partial t} (B^2)$?

asked Nov 27, 2019 at 11:33

0 votes

1 answer

492 views

Taking into consideration the non-0 value of an equipotential in a method of images problem

asked May 31, 2019 at 0:55

0 votes

0 answers

750 views

What is the electric field between two coaxial conducting cylinders when a charged sphere is placed within the inner cylinder?

asked Jun 10, 2019 at 19:30

0 votes

1 answer

462 views

What is the Hamiltonian operator, and is it unique?

asked Sep 22, 2019 at 19:12

0 votes

1 answer

693 views

Formation of a second image due to reflection at a boundary

asked Mar 26, 2019 at 18:53

0 votes

1 answer

312 views

How to find the equation of motion for a string threaded through the centre of a table?

asked Mar 27, 2019 at 10:50

0 votes

1 answer

114 views

A changing magnetic field passes through a wire loop but the loop itself is not in the field. Is an EMF induced in the loop? [duplicate]

asked Apr 4, 2019 at 15:57

0 votes

1 answer

277 views

How to verify generally that the formula for electric potential is a solution to Poisson's equation?

asked Apr 11, 2019 at 18:58

0 votes

2 answers

180 views

Are inner product equations invariant everywhere in spacetime?

asked May 9, 2021 at 16:43

Stack Exchange Network

67 Questions

Calculating the Universe's change in entropy for irreversible processes involving a system and a heat bath

Why are diffracted wave fronts drawn with curved edges in textbook diagrams, when according to Huygen's principle they should be straight lines?

Why are electrons written with a proton number?

Are thermistors and filament bulbs ohmic?

Deriving the equation for kinetic energy

Forces acting on the water in a bucket when the bucket is vertically spun on a string?

What makes a collision 2D?

Why does the Universe resist change?

The impact of refraction on a double slit interference pattern

Potential energy of two colliding particles in space

Can work done ever be negative?

Why do we differentiate a 4 vector with respect to proper time to obtain 4-velocity?

Does the associated colour of a spectral class (red and class M, for example) come from the peak black body radiation of stars in that class?

A train passes an observer on a platform at half the speed of light. Who measures the proper time?

Why is the net torque 0 when pushing a block across a table?

How do you identify the elastic limit and yield point on a stress/strain graph?

Why is the potential difference across a component not constant? [duplicate]

Why doesn't limiting friction contradict Newton's Third Law?

Struggling with a mechanics exam question regarding a circular frictionless slope [closed]

Why, when using an ammeter in a circuit powered by DC, does the current sometimes read as negative?

Intensity of a grating pattern in the limit of infinite slits

Why does $\vec{B}\cdot\frac{\partial \vec{B}}{\partial t}=\frac{1}{2}\frac{\partial}{\partial t} (B^2)$?

Taking into consideration the non-0 value of an equipotential in a method of images problem

What is the electric field between two coaxial conducting cylinders when a charged sphere is placed within the inner cylinder?

What is the Hamiltonian operator, and is it unique?

Formation of a second image due to reflection at a boundary

How to find the equation of motion for a string threaded through the centre of a table?

A changing magnetic field passes through a wire loop but the loop itself is not in the field. Is an EMF induced in the loop? [duplicate]

How to verify generally that the formula for electric potential is a solution to Poisson's equation?

Are inner product equations invariant everywhere in spacetime?