题目:
如图所示表示一列沿x轴正方向传播的横波在t=0时刻的波形。已知波速v=2.4 m/s,横坐标为x=0.9 m的质点,从t=0到t=1 s,通过的路程为
[ ]A.2.56 m
B.2.4 m
C.0.16 m
D.0.02 m
答案:
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