1.一根张紧的水平弹性长绳上的a,b两点,相距14米,b点在a点的右方.当一列简谐横波沿此长绳向右传播时,若a点的位移达到正极大时,b点的位移恰为零,且向下运动.经过1秒后,a点的位移为零,且向下
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![1.一根张紧的水平弹性长绳上的a,b两点,相距14米,b点在a点的右方.当一列简谐横波沿此长绳向右传播时,若a点的位移达到正极大时,b点的位移恰为零,且向下运动.经过1秒后,a点的位移为零,且向下](/uploads/image/z/6980784-24-4.jpg?t=1.%E4%B8%80%E6%A0%B9%E5%BC%A0%E7%B4%A7%E7%9A%84%E6%B0%B4%E5%B9%B3%E5%BC%B9%E6%80%A7%E9%95%BF%E7%BB%B3%E4%B8%8A%E7%9A%84a%2Cb%E4%B8%A4%E7%82%B9%2C%E7%9B%B8%E8%B7%9D14%E7%B1%B3%2Cb%E7%82%B9%E5%9C%A8a%E7%82%B9%E7%9A%84%E5%8F%B3%E6%96%B9.%E5%BD%93%E4%B8%80%E5%88%97%E7%AE%80%E8%B0%90%E6%A8%AA%E6%B3%A2%E6%B2%BF%E6%AD%A4%E9%95%BF%E7%BB%B3%E5%90%91%E5%8F%B3%E4%BC%A0%E6%92%AD%E6%97%B6%2C%E8%8B%A5a%E7%82%B9%E7%9A%84%E4%BD%8D%E7%A7%BB%E8%BE%BE%E5%88%B0%E6%AD%A3%E6%9E%81%E5%A4%A7%E6%97%B6%2Cb%E7%82%B9%E7%9A%84%E4%BD%8D%E7%A7%BB%E6%81%B0%E4%B8%BA%E9%9B%B6%2C%E4%B8%94%E5%90%91%E4%B8%8B%E8%BF%90%E5%8A%A8.%E7%BB%8F%E8%BF%871%E7%A7%92%E5%90%8E%2Ca%E7%82%B9%E7%9A%84%E4%BD%8D%E7%A7%BB%E4%B8%BA%E9%9B%B6%2C%E4%B8%94%E5%90%91%E4%B8%8B)
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