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  1. ...adhesive tape. 圖片參考:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/ Cling _duct_tape.jpg/180px- Cling _duct_tape.jpg Duct tape is a strong...

  2. ...as a winter store. Some fruits have hooks on them and cling to fur or clothes. How birds and animals help seed...

  3. 1. I think the answer is wrong. The correct answer should be 5000 N 2. Centripetal acceleration = 1000w^2 where w is the nagular velocity of the space station hence, 1000w^2 = 9.8 w = 0.1 s^-1 hence, no of revolution per minute = (0.1/2.pi) x 60 = 0.955 3. Let R be the distance from...