Physics, 21.09.2021 04:40 babbity2009
Một vật dao động điều hoà có li độ x = 5cos(5t + /4)cm. Tìm chu kỳ và tần số dao động và li độ vật ở thời điểm t = 1,5s.
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Một vật dao động điều hoà có li độ x = 5cos(5t + /4)cm. Tìm chu kỳ và tần số dao động và li độ vật...
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