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    dairo's Avatar
    dairo Posts: 2, Reputation: 1
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    #1

    Nov 7, 2009, 11:23 AM
    Solar physics
    What is the average velocity of the earth`s rotation and revolution?
    dairo's Avatar
    dairo Posts: 2, Reputation: 1
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    #2

    Nov 7, 2009, 11:25 AM

    What is the average velocity of the earth`s rotation and revolution?
    excon's Avatar
    excon Posts: 21,482, Reputation: 2992
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    #3

    Nov 7, 2009, 12:09 PM

    Hello d:

    The Earth is moving around the Sun at about 67,000 miles per hour. Earth's equatorial speed is slightly less, or 1,669.8 km/h.

    That took about 3 seconds of googling. You should try it.

    excon
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Nov 7, 2009, 07:59 PM

    You could try calculating it using the formula for the circumference of a circle.



    If you know the radius of the Earth, an average, you have approximately 6 400 000 m.

    That makes the circumference as 40 212 386 m.

    Now the Earth takes 24 hours to make a complete revolution, that means that the speed is 40 212 386/24 = 1 675 516 m/h = 1 675 km/h

    And you'll see it's really close to the actual speed, that excon gave. :)
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