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Physics, 11.12.2021 18:50 electrofy456

Câu 20. Một con lắc đơn dao động điều hoà với tần số f = 4Hz. Thế năng của con lắc biến thiên tuần hoàn theo thời gian với tần số là

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Câu 20. Một con lắc đơn dao động điều hoà với tần số f = 4Hz. Thế năng của con lắc biến thiên tuần h...

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