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March 25, 2017

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A star is 300 light years away from Earth. If the speed of light is 3 X 10^5 km/s, calculate the distance the star is from Earth. Give your answer in kilometers and written if standard form.

  • Math - ,

    300(3 x 10^5)
    = 900 x10^5
    = 9.0 x 10^7

  • Math - ,

    totally misread that question, sorry
    300 years
    = 300(365) days
    = 300(365)(24) hours
    = 300(365)(24)(3600) seconds

    so distance
    = 300(365)(24)(3600)(3 x 10^5) km
    = 2.3824 x 10^16 km

  • Math - ,

    The question says 300 light years not 300 years

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