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1 answer
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Periodicity of the dual scalar in $T$-duality

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1 answer
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Error in Susskind's "The Theoretical Minimum"?

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1 answer
367 views

Hamiltonian of a 3-level system with Zeeman sub-levels

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2 answers
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Minkowski Interpretation of Increase of Mass for Moving Object

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How to calculate the pressure of points between A and B in a siphon

2 votes
5 answers
911 views

Sum of the individual kinetic energies of the particles which make the system the same as the K.E. of the center of mass? What's bad in my reasoning?

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0 answers
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how fast does a pulsar lose its mass

3 votes
4 answers
162 views

How can non-realism alone explain quantum entanglement?

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Time-dependent perturbation theory for hydrogen atom transition

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Ephemeris calculations: Light time correction of the moon

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6 answers
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How can spatial dimensions both expand and contract for the same observer at the same time?

4 votes
3 answers
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How do we justify that work is a "transfer of energy" in the general case?

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1 answer
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Calculate discharge from pipe when the headloss is unkown using colebrook white, only D, L, DeltaH, Roughness known

5 votes
2 answers
974 views

Relation between the trace anomaly and the energy-momentum tensor being off-shell

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