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user5389726598465
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5 votes
2 answers
898 views

In a four mass six spring vibration, how is the kinetic energy represented

3 votes
2 answers
3k views

Why are diamagnetic materials repelled when the B field is not changing?

3 votes
1 answer
127 views

How does the delay of pulsar signals prove that gravity travels at the speed of light?

3 votes
0 answers
244 views

How is it possible to have red shift along one axis and blue shift on another in a spiral galaxy arm?

2 votes
1 answer
2k views

Formula for a double pendulum

2 votes
2 answers
3k views

Why is the B field of a solenoid equal to $\mu_0 i n$ while that of a loop is $\frac{\mu_0 i R^2}{2(R^2+z^2)^{3/2}}$?

2 votes
2 answers
635 views

In the proof of the parallel axis theorem, why is the averaged $x$-coordinate "zero by construction"?

1 vote
0 answers
18 views

Why does no three-scalar parameterization of 3d orientation exist that doesn't contain singularities?

1 vote
1 answer
291 views

Why do neutron stars fed by another star not produce a second supernova like white dwarf supernovae?

1 vote
2 answers
944 views

Why is the electric potential of an electron in a capacitor measured from the negative plate and not the positive plate here?

0 votes
2 answers
408 views

If the commutator $[x,p]=i$, why does $[x,p^2]=2ip$?

0 votes
0 answers
126 views

How is EMR "delayed" in pulsar dispersion if light speed is constant?

0 votes
1 answer
903 views

In a coupled pendulum, how is the equation of motion described

0 votes
2 answers
3k views

In an AC circuit which voltage lags the current in a capacitor: Source voltage or capacitor voltage?

0 votes
0 answers
51 views

What does temperature refer to in the vacuum of space? [duplicate]