Dịch tiếng anh sang tiếng việt

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    07-Aug-2015

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  1. 1. Dch ting anh sang ting vit http://www.mientayvn.com/dich_tieng_anh_chuyen_nghanh.html Lin h: thanhlam1910_2006@yahoo.com hoc frbwrthes@gmail.com Ti tt c cc bi: http://www.mientayvn.com/1 _den_5.rar http://www.mientayvn.com/6 _den_25.rar http://www.mientayvn.com/2 7_den_36.rar
  2. 2. Khi biu din lc ti 1 im th im t ca lc l ti im , cn i vi vt rn th cc lc t vo vt nhng c th t ti nhng im khc nhau trn vt. V vt rn c kch thc ln. - Khi biu din cc lc tc dng ln mt vt rn th c g khc so vi 1 cht im? Vt rn Cht im
  3. 3. 1 2 3 ... 0F F F+ + + = rr r r Khng quay Quay
  4. 4. Th 1 2 0F F+ = rr r Tc l 1 2F F= r r 1 2 3 ... 0F F F+ + + = rr r r
  5. 5. 1 2F F= r r
  6. 6. Th Tc l1 2 3 0F F F+ + = rr r r 1 2 3F F F+ = r r r 1 2 3 ... 0F F F+ + + = rr r r
  7. 7. 1 2 3F F F+ = r r r