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11 votes
2 answers
2k views

Kinematic equation as infinite sum

6 votes
4 answers
1k views

Why are electrical units (specifically, electrical current) considered a base unit?

4 votes
0 answers
190 views

Consistent nomenclature for $\mathbf{E}$-, $\mathbf{D}$-, $\mathbf{B}$-, $\mathbf{H}$-, $\mathbf{P}$-, and $\mathbf{M}$-fields [closed]

2 votes
1 answer
4k views

Two different meanings of $\nabla$ with subscript?

2 votes
1 answer
170 views

What assumptions would I have to make to rigorously prove power equals force dotted with velocity, $P=\mathbf{F}\cdot\mathbf{v}$?

2 votes
1 answer
540 views

How does one describe how a basis vector changes through space using the Christoffel symbols?

2 votes
1 answer
174 views

Why do we need to define both luminous intensity and illuminance?

1 vote
1 answer
295 views

How is the subjective loudness of sound computed?

1 vote
2 answers
163 views

Would Faraday’s law still hold?

1 vote
1 answer
71 views

How does one categorize antiparticles in flavor, family and generation?

1 vote
1 answer
180 views

Is the matrix Lorentz transform equivalent to statements of time dilation, length contraction and effective mass?

1 vote
2 answers
128 views

Why is the formula written this way?

0 votes
1 answer
82 views

Electric field per permittivity

0 votes
2 answers
4k views

Deriving $-dU/dr$

0 votes
2 answers
2k views

Mathematical relationship between escape speed and orbital speed

0 votes
3 answers
325 views

Base unit definition and realization under relativistic conditions

0 votes
1 answer
76 views

Can this textbook question on angular magnification be answered without a ruler?