试题与答案

坐标原点O处有一波源在t=0时刻开始做简谐运动,形成简谐横波沿x轴传播。当t=2

题型:计算题

题目:

坐标原点O处有一波源在t=0时刻开始做简谐运动,形成简谐横波沿x轴传播。当t=2s时,在x=-7.7m处的质点p及附近的点第一次出现如图甲所示的波形图。当波传至x=+8.8m处的Q质点开始计时,Q的的振动图象如图乙所示。

(1)求波长;

(2)画出P点的振动图象(从Q点起振开始计时)。

       

答案:

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