Saturday, October 24, 2015

everyday life - If water is not a good conductor, why are we advised to avoid water near electricity (no wet hands near circuits etc.)?


How can water be a medium to conduct current while its ionisation is so negligible that, in principle, no current should flow?




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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 \...