作者查詢 / FuYen
作者 FuYen 在 PTT [ Physics ] 看板的留言(推文), 共107則
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15F推: 選項是錯的,但你舉的例也不對06/28 23:34
16F→: 不對好像沒問題 當我沒說XD06/28 23:46
5F推: 鉛直指的是運動平面跟地面鉛直06/12 12:20
6F推: 有時候能量也用這個單位05/22 01:14
8F推: 應該是做原子分子光譜的比較喜歡用wavenumber表示能量05/22 01:59
9F→: 量化課本還有習題是把wavenumber換成eV的..05/22 02:01
1F推: 在黃光室寫作業?XD04/30 07:11
3F推: 非慣性系是可以分辨出自己正在加速的 所以加速度不會消失04/17 21:30
2F推: 弧指的是圓上一段周長 這題來說你要先知道曲率半徑04/11 01:44
3F→: 你已經注意到圓弧上的運動可以視為擺長為曲率半徑的單擺04/11 02:03
4F→: 而這樣的運動需要求解微分方程 又是大角度 是沒有解析解的04/11 02:04
4F→: 這樣只會有一個方向可以視為光滑04/04 23:03
4F推: 1.上面磚塊總和的質心剛好在下面一塊的邊緣03/17 02:22
5F→: 2.三角形的比例關係03/17 02:22
1F推: 1.只是想表達x軸代表空間座標03/11 18:41
2F→: 2.對 代表介質中某一點隨時間y的變化03/11 18:41
3F→: 3.對 行進波的振幅是位置和時間的函數y=(x,t) a跟b分別代表03/11 18:42
4F→: 固定時間(選擇某一時刻)和固定位置(選擇某一點)對y的圖形03/11 18:43
1F推: F=ILB=ma (dq/dt)LB=m(dv/dt) => q=mv/LB03/06 23:02
2F→: *最後寫成Δq=mΔv/LB應較妥當03/06 23:05
8F推: 0.06沒錯啊? Δv就代表一段時間的速度變化量,不需要加Σ03/06 23:37