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1 vote
1 answer
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Weird and short question on Lorentz transformations

0 votes
3 answers
20 views

Current, resistance, temperature and area

2 votes
5 answers
13k views

What could be added to tap water to reduce air bubble formation on a submerged object?

2 votes
1 answer
37 views

Induction Heating and Negative Temperature

1 vote
2 answers
679 views

Virtual Work - Is the presentation in Cornelius Lanczos wrong?

6 votes
2 answers
938 views

How is Large Gauge Transformation a kind of global symmetry if it varies from point to point?

4 votes
5 answers
597 views

Potential energy with constraints moving body

2 votes
1 answer
59 views

Why the source term can represent the source in the wave equation?

0 votes
1 answer
66 views

Exactly what do we mean by saying that a given clock "realizes a particular duration", such as "realizing the SI base unit: second (s)", for instance?

1 vote
3 answers
186 views

Is the magnetic field produced by a wire current $I$ on a moving train observer the same for a stationary observer?

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3 answers
723 views

Direction of electric field in the following cases?

9 votes
4 answers
1k views

When I bang two metal spheres together to demonstrate kinetic energy by burning paper, why don't the rest of the spheres get hot?

3 votes
3 answers
319 views

Zero Energy and Zero Mass

-1 votes
2 answers
155 views

Clock on a moving rocket

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