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Posted on Tháng Tư 27, 2012


Ch00se the freed0m t0 w0rk fr0m h0me d0ing w0rk y0u l0ve

Fri, 27 Apr 2012 6:28:27
It is obvious that the wind will exert a greaterforce against a plane when at its normal.On theother hand, the least pressure against a plane iswhen it is in a horizontal position, because thenthe wind has no force against the surfaces, andthe only effect on the drift is that which takesplace when the wind strikes its forward edge. sharrin ackerley

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