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Physics, 30.07.2021 19:40 hayesvolcano

Một vật dao động theo phương trình x=9cos(10πt). Tìm li độ khi tốc độ đạt 45π√3 π

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Một vật dao động theo phương trình x=9cos(10πt). Tìm li độ khi tốc độ đạt 45π√3 π...

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