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Assume Classical Ideas of Space and Time (Ether)

  1. Jun 8, 2013 #1
    1. The problem statement, all variables and given/known data
    My question is part C of problem 1.9:
    http://facultyfiles.deanza.edu/gems/lunaeduardo/4DHW.PDF

    2. Relevant equations
    Pythagorean Theorem?
    3. The attempt at a solution
    I have c vector of lightwave going upwards and v going rightwards forming a right angle with the other vector.
    Now, I need to find the observed speed of the lightwave on earth.
    I would do √(c^2 + v^2), since the particles are being separated by the hypotenuse, but I think it's wrong I have seen some answers online that involve a minus sign for some reason.

    Could someone elucidate?
    Thank you.
     
  2. jcsd
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