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範例:自由端的駐波[85日大]

一弦線的一端固定，另一端則以一很輕的小環套在一細長且光滑的棒上。環的質量可以不計；弦在靜止時與細棒垂直。若弦的長度為0.5公尺，線密度為0.01公斤/公尺，弦振動的基頻為100赫，則弦的張力為(A)400牛頓 (B)200牛頓 (C)100牛頓 (D)50牛頓 (E)25牛頓。[85日大]


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Posted in 歷屆物理考題, 駐波.

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By admin – 2009 年 10 月 05 日

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