chemistry

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how long would it take a radio wave with a frequency of 7.25 x 10to the 5th to travel from Mars to earth if the distance is approx. 8.0 x 10 to the 7th?

  • chemistry -

    If the distance is 8.0E7 WHAT? miles? km? feet? gallons?
    distance = rate x time.
    Radio waves travel at 3E8 m/s

  • chemistry -

    Oh I am sorry, the distance between mars and earth is measured in kilometers.

  • chemistry -

    Substitute into distance = rate x time and solve for time. You will need to change the distance from km to m or rate from m/s to km/s.

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