单选题:如图2-10所示,两列平面简谐相干波分别沿S1P和S2P传播,波速均为10m/s,t=0时,在S1和S2处质点的振动方程

  • 题目分类:公共基础
  • 题目类型:单选题
  • 查看权限:VIP
题目内容:
如图2-10所示,两列平面简谐相干波分别沿S1P和S2P传播,波速均为10m/s,t=0时,在S1和S2处质点的振动方程分别 为yl=0.03Cos10t(m),y2=0.04Cos10t(m),振动方向均垂直纸 面。那么,t时刻P处质点振动的振幅为(  )m。
A.0.01
B.0.07
C.0.05
D.0

参考答案:
答案解析:

第52题答案为(  )

第52题答案为(  )A.gives B.brings C.carries D.takes

查看答案

阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项。 It is not polite

阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项。 It is not polite to arrive at a din

查看答案

__________ is often the case with children, Tom was complete

__________ is often the case with children, Tom was completely better .by the ti

查看答案

The book_________by a famous writer.

The book_________by a famous writer.A.was believed to write B.believed to be wri

查看答案