3λ |
4 |
λ |
4 |
3T |
4 |
4t |
(4n+3) |
0.8 |
(4n+3) |
T |
4 |
4t |
(4n+1) |
0.8 |
(4n+1) |
x |
t |
λ |
T |
x |
t |
(4n+3) |
0.2 |
λ |
T |
(4n+3) |
0.8 |
x |
t |
(4n+1) |
0.2 |
λ |
T |
(4n+1) |
o.8 |
3λ |
4 |
λ |
4 |
4t |
(4n+3) |
0.8 |
(4n+3) |
4t |
(4n+1) |
0.8 |
(4n+1) |
A.该波沿x轴正方向传播 |
B.c正向下运动 |
C.该时刻以后,b比c先到达平衡位置 |
D.该时刻以后,b比c先到达离平衡位置最远处 |
A.λ=12cm,f=50Hz | B.λ=4cm,f=150Hz |
C.λ=12cm,f=150Hz | D.λ=4cm,f=50Hz |
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