![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21c312e5c88eef8427e48e4d6f9e799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5878d23f766dc1d1fe4dbe90355755.png)
(1)质点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)从图示时刻经多长时间,质点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/ea16e082-3116-4206-accc-514f9814c738.png?resizew=539)
2 . 如图甲,两波源A、B间的距离,P点在A、B的连线上,A、P间的距离
。从
开始,两个波源的振动图像如图乙所示,其中实线和虚线分别为波源A和B的振动图像。已知两列波在介质中的波长均为
。求:
(1)两列波在介质中的传播速度大小v;
(2)质点P在时间内经过的路程s。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3c97be09e6273acf2936ccb5e6807d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc877e64fd41645d627f4bc9222b484c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4fd62ab9c4d03fbf8935778f859140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbfdd7abee5fdf3acb937e6c1d901780.png)
A.沿![]() |
B.简谐横波传播到质点![]() ![]() |
C.简谐横波的传播速度为![]() |
D.![]() ![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecacab7f83363e03e81fccd7a196c456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a8f8cc194f72c4e08fa7cc57dbd272.png)
A.波长为![]() ![]() ![]() |
B.如果波向左传播,质点![]() ![]() |
C.如果波是向右传播的,则波的周期可能为![]() |
D.如果波是向左传播的,则波的周期可能为![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c4f8b7a60a52076616349a45d6a4ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/9768bea3-ef94-4777-97c1-a7a6f0d6921a.png?resizew=277)
A.在这种介质中波速![]() |
B.![]() ![]() |
C.波源振动方程![]() |
D.![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/40937c63-eacc-47d3-aad4-9285e92153b2.png?resizew=264)
A.A点处波长是10cm,B点处波长是5cm |
B.周期一定都是2×10-2s |
C.t=0.0125s时刻,两质点的振动速度方向相反 |
D.传播速度一定是600m/s |
E.A质点的振幅是B质点的振幅的2倍 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb951d9804a4c33e6ff2e5afd73e4dff.png)
A.图乙可能为质点c的振动图像 |
B.该波的传播速度为![]() ![]() |
C.再经过![]() ![]() |
D.从计时开始到质点c迎来第二个波峰的时间内波源通过的路程为![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ce016f9d4e8120442645030953baf7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/1af3eb2d-570b-45c3-9373-583855806d52.png?resizew=269)
A.水波沿x轴正方向传播 | B.水波的振幅为![]() |
C.水波的周期为0.4 s | D.水波的波长为8 cm |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3caed477d7b2d477ddad5eba29c290db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/9cfa858b-0a84-4680-a7f2-cb9725b892ea.png?resizew=322)
A.简谐波在血管中的传播速度为8000m/s |
B.![]() |
C.![]() |
D.![]() |
10 . 波动图像
(1)建立坐标系
用横坐标x表示在波的传播方向上各质点的
(2)对波的图象的理解
①波的图象是某一时刻介质中各个
②简谐波的图象是
(3)由波的图象获得的三点信息
①可以直接看出在该时刻沿传播方向上各个质点的
②可以直接看出在波的传播过程中各质点的振幅A及波长。
③若已知该波的传播方向,可以确定各
(4)波的图象的周期性
质点振动的位移做周期性变化,即波的图象也做
(5)波传播方向的双向性
如果只知道波沿x轴传播,则有可能沿x轴正向或x轴负向传播