作者查詢 / wolfking
作者 wolfking 在 PTT [ Physics ] 看板的留言(推文), 共95則
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2F推: L是5.4m 不是0.45m01/02 12:51
27F推: 加速度的方向是合力方向11/29 18:46
1F推: 理想電池電壓24V,從第二個圖可以知道安培計的電位差是811/21 18:26
2F→: V,電阻是2歐姆。然後從第一個圖就可以算出待測電阻。11/21 18:26
16F推: 彈力不會在極短時間改變力的大小08/19 00:14
3F推: 應該是mesh current的方法吧,不過解聯立就直接火拼代入03/10 23:07
4F→: 消去啊!03/10 23:07
5F推: 我是用MathType06/25 18:45
18F推: 應該是因為桿子長度不會變,所以兩邊會一起滑動吧O.O06/10 20:00
11F推: 不是虎克定律,是外力抵抗重力作功,你拉越上去,下垂繩05/12 18:27
12F→: 子重量越少,你施力就越少而已。05/12 18:27
11F推: 如果你把磁鐵N極相對放近一點,磁力就會對兩個磁鐵作正06/17 21:28
12F→: 功啊06/17 21:28
16F推: 磁位能減少沒錯啊,不過一樣是磁力對兩物體同時作正功,06/29 12:50
17F→: 看的角度不一樣而已06/29 12:50
18F→: 換個說法好了,兩個人在光滑平面上互推,兩個人之間的作06/29 12:51
19F→: 用力和反作用力同時對兩人作正功06/29 12:51
23F推: 乙對甲作負功?06/29 18:17
1F推: 角動量守恆加上力學能守恆03/21 22:54