What is the physics meaning of the "trace" (Tr) and how we can calculate it?
30037
What information does the trace of a matrix give?
73293
Significance of intercept (as portrayed via an R formula)
73660
Relativistic Doppler effect derivation
52598
How can I interpret "energy" in signals?
17754
Intuitive Understanding of the constant "$e$"
123776
Questions about the Fermi-Dirac distribution at $T=0.$
28057
Deriving $p = mv$ from translational symmetry (momentum conservation law)?
151930
What does it mean by $t=-1$?
107478
Equation of motion of a free particle
30211
Path followed by a free test charge in an electric field region represent the electric lines of forces?
120869
How does the drift velocity of electrons in a conductor depend on the temperature?
103000
What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?
73414
What does the minus sign in Maxwell's third equation imply?
136464
The propagation of electric field
17121
Kinetic energy with respect to different reference frames
32489
How does bra-ket notation work?
50684
Does the sign of $\Delta x$ matter in this time dilation calculation?