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[問題]有關真空折射率等於零的問題

[ Physics ]52 留言, 推噓總分: +31

作者: n0lin - 發表於 2007/10/05 22:11(18年前)

45^F推profyang:我覺得原po的折射率定義是不是和一般的定義不一樣阿???10/06 18:13

47^F推profyang:我發現照你的折射率定義n相對=n真空/n空氣所以n相對=0?10/07 02:19

Re: [問題] 有關於瞬間加速度的

[ Physics ]2 留言, 推噓總分: +2

作者: rulala - 發表於 2007/10/02 07:54(18年前)

2^F推profyang:函數那麼多,也不一定是多項是函數,所以題目本來就有問題!10/02 15:51

[題目] 轉動慣量

[ Physics ]3 留言, 推噓總分: +2

作者: profyang - 發表於 2007/10/02 01:28(18年前)

2^F推profyang:喔對忘了:垂直穿出中心那個圓平面10/02 02:12

3^F→profyang:m大加油^^10/02 02:14

[問題] 有關於瞬間加速度的

[ Physics ]10 留言, 推噓總分: +5

作者: assi - 發表於 2007/10/02 01:26(18年前)

1^F推profyang:你沒給v對時間的函數沒辦法算吧= =10/02 01:29

Re: 繩子不均勻

[ Physics ]1 留言, 推噓總分: +1

作者: Htwelf. - 發表於 2007/10/01 17:01(18年前)

1^F推profyang:醬子中心以下質量變成m/8,於是照g大的想法,T=mg/810/02 01:20

[問題]萬有引力問題

[ Physics ]5 留言, 推噓總分: +4

作者: stylusshu - 發表於 2007/09/28 22:41(18年前)

4^F推profyang:確定??目前重力波未證明存在吧???09/29 00:07

Re: 繩子不均勻

[ Physics ]5 留言, 推噓總分: +1

作者: genius100 - 發表於 2007/09/28 18:37(18年前)

3^F推profyang:你可以直接積下半的質量呀,這方法不錯在均勻重力場中較快09/28 22:02

[請益] 相對論的想法

[ Physics ]5 留言, 推噓總分: +5

作者: olivierC - 發表於 2007/09/27 18:08(18年前)

1^F推profyang:這三小= =照你降說b比光速慢回來就比地球上的a老了??09/27 20:10

4^F推profyang:推light大09/28 17:03

Re: [問題] 一個高中物理問題

[ Physics ]2 留言, 推噓總分: 0

作者: profyang - 發表於 2007/09/26 01:12(18年前)

1^F→profyang:不好意思昨天太晚了算錯...09/26 17:26

[問題] 一個高中物理問題

[ Physics ]10 留言, 推噓總分: +3

作者: genius100 - 發表於 2007/09/25 18:13(18年前)

6^F推profyang:不好意思,我覺得(L/g)^1/2是錯的...09/26 01:00

7^F→profyang:應該要給起始露在外面的長度y09/26 01:01

8^F→profyang: 長度y009/26 01:02

9^F→profyang:那麼,t=(L/g)^1/2*ln(L/y0)09/26 01:02

10^F→profyang:所以注意當y0=0時,t趨近於無限大....09/26 01:04

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