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Physics, 25.07.2021 05:30 NathalyN

Một chất điểm dao động điều hòa trên trục x'x, có phương trình:x=2cos(5πt-π/4) (cm, s) xác định piên độ chu kì tần số pha pan đầu và chiều dài quỹ đạo của dao động

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Một chất điểm dao động điều hòa trên trục x'x, có phương trình:x=2cos(5πt-π/4) (cm, s) xác định piê...
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