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If the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much time do

  1. Nov 24, 2012 #1
    1. The problem statement, all variables and given/known data

    if the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much time does it take the light to travel through the distance of 60 cm?

    2. Relevant equations

    n/a

    3. The attempt at a solution

    i tried to do something but not enough.. :(
     
  2. jcsd
  3. Nov 24, 2012 #2

    Doc Al

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    Staff: Mentor

    Re: if the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much tim

    What's the definition of speed? (Rewrite the speed of the light more carefully. I doubt you meant 10^-8.)
     
  4. Nov 24, 2012 #3
    Re: if the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much tim

    yes,it can be 2.10^8 m/s
     
  5. Nov 24, 2012 #4
    Re: if the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much tim

    if the velocity of light in the medium is assumed to be 2.10^8 m/s, right?

    so, if it had asked:

    how much time does it take the light to travel through the distance of 2.10^8 m?

    You would have answered 1 second.

    From here, you can derive the formula.

    distance/speed = time taken

    Just be sure to convert the units as needed :)
     
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