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7 votes
4 answers
476 views

Is it possible to express various nonlinear motions as straight lines in transformed spacetime?

0 votes
0 answers
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OPE limit of four point function in de Sitter space

1 vote
2 answers
54 views

Vertical trajectory of a projectile with quadratic drag

2 votes
3 answers
57 views

Electric Field Within a Conductor

0 votes
1 answer
58 views

Why does the up and anti-up quark combine into a pion and not a photon?

0 votes
1 answer
35 views

Relationship Between Ground State Wavefunctions' Amplitudes Under Discrete Symmetry Operations

0 votes
1 answer
749 views

Why does a running fan produces some sound?

-2 votes
2 answers
2k views

Why does a running fan causes some soundproofing in the room?

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0 answers
7 views

Which higher-order terms require 4th-order integration of constrained dynamics?

0 votes
1 answer
76 views

Why does the quantum expectation in Bell's inequality have to take on the form of a quantum probability measure in Valter Moretti's book?

3 votes
1 answer
64 views

How to obtain "canonical form" of the following master equation?

9 votes
1 answer
303 views

Photon pumping in Laser

0 votes
2 answers
79 views

How is it possible to have charged sources but with source-free Maxwell equations?

6 votes
1 answer
382 views

What will happen if we keep bringing two protons closer and closer to each other, starting from a large distance?

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