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Physics, 24.07.2021 04:30 oof1231

một vật dao động điều hòa có phương trình x=Acos(ωt+π). Gọi v và alaadn lượt là vận tớc và gia tốc của vật. Hệ thức đúng là

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một vật dao động điều hòa có phương trình x=Acos(ωt+π). Gọi v và alaadn lượt là vận tớc và gia tốc c...
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