问题
单项选择题
一平面简谐波表达式为y=-0.05sinπ（t-2x）（SI），则该波的频率γ（Hz）、波速u（m/s）及波线上各点振动的振幅A（m）依次为：（）
A.
，，-0.05
B.，1，-0.05
C.，，0.05
D.2，2，0.05
答案
参考答案：C
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一平面简谐波表达式为y=-0.05sinπ（t-2x）（SI），则该波的频率γ（Hz）、波速u（m/s）及波线上各点振动的振幅A（m）依次为：（）
A.，，-0.05
B.，1，-0.05
C.，，0.05
D.2，2，0.05
参考答案：C
| 阅读理解。 |
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