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Physics, 22.07.2021 22:30, williamsa24mr238org
Một dao động điều hòa theo phương trình :x=4cos(10πt+π/4)(cm) Vào thời điểm t=0 vật đang ở đâu và di chuyển theo chiều nào?Vật tốc bằng bao nhiêu?
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Một dao động điều hòa theo phương trình :x=4cos(10πt+π/4)(cm) Vào thời điểm t=0 vật đang ở đâu và di...
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