下图是一列横波在某一时刻的波形图像.已知这列波的频率为5Hz,此

下图是一列横波在某一时刻的波形图像.已知这列波的频率为5Hz,此时x=0.5m处的质点正向轴正方向振动,可以推知:这列波正在沿     ▲     (”)方向传播,波速大小为    ▲   m/s,该质点1s内通过的路程为    ▲     m

答案

正(2分)           102分)          22分)

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