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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8F推: 想像一下把SHM看成圓周運動 運動的平面就是複平面03/06 15:32
9F→: 真實的物理量是複平面上對於實軸的投影03/06 15:32
10F→: 而交流電路可以視為一種SHM震盪 概念是一樣的03/06 15:34
6F推: 只有物體放到輸送帶的那一瞬間有摩擦力 跟輸送帶等速就沒了03/02 09:18
7F推: 至少比100年好一點點XD02/22 01:40
1F推: 是的 凝固點下降與重量莫耳濃度成正比01/18 01:15
3F→: 要注意是重量莫耳濃度不是重量百分濃度01/18 01:18
2F推: 等號右邊是轉動角動量加上相對p點運動的角動量01/17 19:25
3F→: 你也可以直接用平行軸定理寫成I'ω 答案是一樣的01/17 19:29
4F→: 不過這題需要找直心速度 所以寫成書上那個樣子01/17 19:32
2F推: 一般來說這種靜力學題目列出牛二是沒有幫助的01/02 22:03
3F→: 要考慮的是各方向的受力平衡 如列出一樓的水平分量平衡01/02 22:05
2F推: 位能高於力學能代表動能是負的 向左移動12/21 02:55
3F→: 位能等於力學能的時候動能減為零開始反向運動 所以是轉向點12/21 02:56
4F→: 平衡點是指位能曲線斜率為零的地方 也就是受力為零12/21 02:59
7F推: 原po的疑問是不知道什麼是波前吧11/18 02:03
8F→: 如果是波前的話答案錯了11/18 02:03
1F推: 沒錯 其實在地球上也會有這個現象 如果你跳得夠高...08/18 00:59
25F推: 國中而言是很爛的題目06/21 01:32