【毎日一問】理論基礎 2020.05.30
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選択問題：周波数がの定在波で、隣り合う二つの節の間の距離がdである場合、その定在波の波長と波速はそれぞれ（ ） A. d d B.2d d C.d 2d D.2d 2d 正解：D ヒント：解き方の過程を説明できた人には特別な報酬があります。正解は返信で確認できます！
D、波長2D、波速＝周波数×波長＝2Dv
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