1)The pilot of an interstellar spaceship traveling at 0.73c determines the diameter of a galaxy to be about 1.50 10¹⁴ km. What value would a stationary observer calculate for the galaxy's diameter?
  

 2) The conductor of a high-speed train uses a meterstick to measure the length of her train at 255 m while the train is stopped at the station. The train then travels at 79% of the speed of light (this is the supersupersonic train!). If she repeats the measurement while traveling on the moving train, what answer will she get? 

  

Answer rating: 100% (QA)

Answer Calculation for the Galaxys Diameter When an object is moving at relativistic speeds its leng... View the full answer