9.如图所示为两列简谐横波在同一绳上传播时某时刻的波形图则下列说法中正确的是 A.波甲的速度v1和波乙的速度v2一样大 B.波甲的速度v1比 Template




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tomski9.如图所示为两列简谐横波在同一绳上传播时某时刻的波形图则下列说法中正确的是 a.波甲的速度v1和波乙的速度v2一样大 b.波甲的速度v1比 coloring