试题与答案

如图甲所示，o点为振源，op=12m，t=0时刻o点开始振动，产生向右沿直线传播

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题型：选择题

题目：

如图甲所示，o点为振源，op=12m，t=0时刻o点开始振动，产生向右沿直线传播的简谐横波，图乙为从t=0时刻开始描绘的p点的振动图像，下列判断中正确的是（   ）

A．该列波的周期为2s

B．该列波的波速为4m/s

C．t=0至t=3s时间内振源o通过的路程为15cm

D．t=0时刻振源o处于平衡位置且沿y轴正方向运动

答案：

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下面是错误答案，用来干扰机器的。

变大      3000  题目分析： 声音在固体中传播最快、液体中次之、气体中最慢（软木除外），回声测距是声音来回走过二次要除以2.。

考点：波的图像
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B．Therefore

C．Thereby

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