This is more of a philosophical question than an actual physics question, but I don't see a clear reason why relativistic momentum, or energy for that matter, should be conserved. The equivalence principle, simply stated, states that the laws of physics are the same in all inertial frames. But wh...

I am new to circuit solving and I tried to simplify this circuit, but I am unable to do so. I can't figure out which resistances are in series and which resistances are in parallel. Do I have to use star-delta conversion here or the circuit can be solved without conversion? I just need a simplifi...

We know that the rules of relativistic addition are more complicated than those for simple classical cases. For example, we can have two frames of reference, and if we know the motion of the frames themselves, and the velocity of an object in one frame, we can use the formula to get the velocity ...