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单选题 {B11-1-4频率为 100 Hz,传播速度为300 m/s的平面简谐波,波线上距离小于波长的两点振动的相位差为,则此两点相距[ ]

A. 2.86 m

B. 2.19 m

C. 0.5 m

D. 0.25 m

学科：大学物理B(下)-2024-2025-1

时间：2024-12-13 07:19:15

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题目1
单选题
{B11-1-1平面简谐波的表达式为 <img src="https://tihai-oss-cloud.itihey.com/img/09291b588d68e1d5c5f169a590e6b2f6.png"> (SI) ,t = 0时的波形曲线如图所示,则[ ] <img src="https://tihai-oss-cloud.itihey.com/img/81a8ece1e41a12ec6cd90b85d48a3e4f.jpg">}
A. O点的振幅为-0.1 mB. 波长为3 mC. b两点间相位差为<img src="https://tihai-oss-cloud.itihey.com/img/8bff6535954f800512c37a0dc568ba84.png">D. 波速为9 m/s
题目2
单选题
{B11-1-2平面简谐波沿Ox正方向传播,波动表达式为<img src="https://tihai-oss-cloud.itihey.com/img/effc8f15fe83b93a7947169738861980.png"> (SI),该波在t = 0.5 s时刻的波形图是[ ]<img src="https://tihai-oss-cloud.itihey.com/img/72a5c9722c03247e733dfd5c55051bb3.png">}
A. B. C. D.
题目3
单选题
{B11-1-3图示为沿x轴负方向传播的平面简谐波在t = 0时刻的波形,若波的表达式以余弦函数表示,则O点处质点振动的初相为[ ] <img src="https://tihai-oss-cloud.itihey.com/img/b4796937c214b6c2cb3bed0699288b38.png">}
A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/8bff6535954f800512c37a0dc568ba84.png">C. pD. <img src="https://tihai-oss-cloud.itihey.com/img/266241db4229502539511c819b499d1f.png">
题目4
单选题
{B11-1-4频率为 100 Hz,传播速度为300 m/s的平面简谐波,波线上距离小于波长的两点振动的相位差为<img src="https://tihai-oss-cloud.itihey.com/img/450513191c64b68ced28ff1d1f9cb1a7.png">,则此两点相距[ ]
A. 2.86 mB. 2.19 mC. 0.5 mD. 0.25 m
题目5
单选题
{B11-1-5一平面简谐波沿x轴正方向传播,t = 0 时刻的波形图如图所示,则P处质点的振动在t = 0时刻的旋转矢量图是[ ]<img src="https://tihai-oss-cloud.itihey.com/img/f6e9201fe2de2c3e047ad9cd1a2862cf.png"><img src="https://tihai-oss-cloud.itihey.com/img/693b427600b43187e9b5b5de6dc803fa.png">}
A. B. C. D.
题目6
单选题
{B11-1-6一个平面简谐波沿x轴正方向传播,波速为u=160m/s,t=0时刻的波形图如图所示,则该波的表式为[ ]<img src="https://tihai-oss-cloud.itihey.com/img/b3e884a82285d57578ccccb8af3cb9f2.png">}
A. <img src="https://tihai-oss-cloud.itihey.com/img/f75e51a42ee321d8b67a6582ee6f15ac.png">mB. <img src="https://tihai-oss-cloud.itihey.com/img/9f2ec4c0e3d1195c49e6b9c03f27ec10.png">mC. <img src="https://tihai-oss-cloud.itihey.com/img/d8b8dbd270e15bf2ad594f6184e35bb0.png">mD. <img src="https://tihai-oss-cloud.itihey.com/img/2ca078b39b91e6cbc1878af885ebb761.png">m
题目7
单选题
{B11-1-7如图所示为一平面简谐波在t=0 时刻的波形图,该波的波速u=200 m/s,则P处质点的振动曲线为[ ]<img src="https://tihai-oss-cloud.itihey.com/img/09653eb7818019b53909504caba08ac0.jpg"><img src="https://tihai-oss-cloud.itihey.com/img/20543cc49a7858fd57327e0f35214bae.png">}
A. B. C. D.
题目8
单选题
{B11-1-8一沿x轴负方向传播的平面简谐波在t = 2 s时的波形曲线如图所示,波速u=1m/s,则原点O的振动方程为[ ]<img src="https://tihai-oss-cloud.itihey.com/img/32af3fd3590cc448bf4182caf973bc88.png">
A. <img src="https://tihai-oss-cloud.itihey.com/img/0be1ab4c6fb254d2c116d71bf4889fe5.png">(SI)B. <img src="https://tihai-oss-cloud.itihey.com/img/e076d289b3c15ffcd58649584705fd70.png">(SI)C. <img src="https://tihai-oss-cloud.itihey.com/img/c6afd473fed7ebadf28a7d194cc355f5.png">(SI)D. <img src="https://tihai-oss-cloud.itihey.com/img/b32c27440d78497a6f0f9eeb8895b490.png">(SI)
题目9
单选题
{B11-1-9图中画出一平面简谐波在t = 2 s时刻的波形图,则平衡位置在P点的质点的振动方程是[ ]<img src="https://tihai-oss-cloud.itihey.com/img/c7573f6efc8ae10620317a1a089cf6f5.png">
A. <img src="https://tihai-oss-cloud.itihey.com/img/cec85a8f3fd0bd1badafae8a159ee532.png">(SI)B. <img src="https://tihai-oss-cloud.itihey.com/img/53f4ace07da56992937468eaf2d96332.png">(SI)C. <img src="https://tihai-oss-cloud.itihey.com/img/808388f244dda6c255f350bca6b2c0c0.png">(SI)D. <img src="https://tihai-oss-cloud.itihey.com/img/1345e820f46331402cc4d9f0617dce98.png">(SI)
题目10
单选题
{B11-1-10横波以波速u沿x轴负方向传播.t时刻波形曲线如图所示,则该时刻[ ]<img src="https://tihai-oss-cloud.itihey.com/img/c6fb8e7df794f6c7ccf185393104cc09.jpg">}
A. A点振动速度大于零B. B点静止不动C. C点向下运动D. D点振动速度小于零
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