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gaubong00
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
con lac lo xo dao dong voi tan so f.the nang cua con lac bien doi tuan hoan voi tan so
e nghi la fai 2f nhung dap an lai la f/2
cho e hoi mot bai nua
vat dao dong dieu hoa cu moi phut thuc hien duoc 120 dao dong.khoang thoi gian giua 2 lan lien tiep ma dong nang cua vat bang 1 nua co nang cua no la
A:2s B:0,25s C:1s D:0,5s
e nghi la fai 2f nhung dap an lai la f/2
cho e hoi mot bai nua
vat dao dong dieu hoa cu moi phut thuc hien duoc 120 dao dong.khoang thoi gian giua 2 lan lien tiep ma dong nang cua vat bang 1 nua co nang cua no la
A:2s B:0,25s C:1s D:0,5s