—横波沿一根弦线传播，其方程为y=-0.02cosπ(40-50(SI) ，该波的振幅与波长分别为：
A.0.02cm,0.5cmB.-0.02m，-0.5mC.-0.02m,0.5mD.0.02m,0.5m...
A.0.02cm,0.5cm
B.-0.02m，-0.5m
C.-0.02m,0.5m
D.0.02m,0.5m 展开
B.-0.02m，-0.5m
C.-0.02m,0.5m
D.0.02m,0.5m 展开
1个回答
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