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Physics, 27.07.2021 04:30 vpowell5371

thế năng của một vật dao động điều hòa có đồ thị như hình vẽ . thời điểm t=50 ms động năng của vật có giá trị

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thế năng của một vật dao động điều hòa có đồ thị như hình vẽ . thời điểm t=50 ms động năng của vật c...
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