A.2m/s | B.
| C.10m/s | D.14m/s |
3 |
4 |
1 |
4 |
4xab |
4n+3 |
4t |
4k+1 |
λ |
T |
14(4k+1) |
4n+3 |
14 |
3 |
1 |
4 |
1 |
4 |
2
| ||
3 |
2 |
A.该波的周期为0.25s |
B.该波的振幅是5m |
C.从这一时刻开始经过1.75s,质点a经过的路程是14cm |
D.从这一刻开始经过1.75s,质点a向右移动的距离为28m |
3 |
2 |
A.a处质点 | B.b处质点 | C.c处质点 | D.d处质点 |
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