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Barack Hussein Obama II (US /bəˈrɑːk huːˈseɪn oʊˈbɑːmə/ bə-RAHK hoo-SAYN oh-BAH-mə; born August 4, 1961) is the 44th and current President of the United States.
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Periods and Logarithmic Decrement of the Gravitation Needle under High Exhaustion 0 out of 5 stars based on 0 ratings.