問題詳情
2.如圖，一長 1.m 的弦，其質量為 g，受一頻率 Hz 音叉的振動，產生三個波腹的駐波，則：
(１)弦上的波速為【 (4) 】m∕s。
(１)弦上的波速為【 (4) 】m∕s。
參考答案
答案：C
難度：適中0.559551
統計：A(50),B(73),C(249),D(33),E(0)
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