Friday, October 27, 2017

homework and exercises - Twin paradox modified for a periodic universe



I had received a homework problem by my professor. Please consider part (b) of the problem.


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Can part (b) be solved only using special relativity? And how can you solve this? I think that Alice will be younger but I am not really sure.




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...