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Physics, 31.08.2021 03:40 nehemiahw7020

trên mặt chất lỏng có hai nguồn kết hợp phát ra hai dao động cùng pha u2=u1=Acoswt(cm) s1s2=4 bước sóng. trên đoạn s1s2 có bao nhiêu điểm dao động tổng hợp có biên độ A căn 2

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trên mặt chất lỏng có hai nguồn kết hợp phát ra hai dao động cùng pha u2=u1=Acoswt(cm) s1s2=4 bước s...
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