作者查詢 / Vulpix
作者 Vulpix 在 PTT [ Physics ] 看板的留言(推文), 共1703則
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2F推: 答案是D,B是沿著法線算出來的數字。05/29 14:34
3F→: 先用成像公式把虛像位置找到,接下來就當虛像是點光源。05/29 14:36
4F→: 把鏡子的所有法線都插到屏幕上去,那個圓的半徑就是4cm。05/29 15:18
5F→: 只對事,而且有禮貌的信件我還是有空會回。05/29 18:43
6F→: 把鏡子的所有反射線都插到屏幕上去則是得到半徑為10cm圓。05/29 21:31
1F→: 用到動摩擦=打滑05/09 23:05
1F→: 水波干涉現象,兩個點波源。光也是波,所以有相同現象。05/07 14:18
16F→: 就是把這份波傳下去,由接觸到障礙物後區域的分子繼續拉。05/09 01:12
17F→: 如果是力學波的話。05/09 01:12
5F→: 考古題啊。05/07 13:05
1F→: 無限遠處那邊連在一起。本來可以直接當成串聯,但這邊利用04/29 15:35
2F→: 兩顆球離很遠這個事實來近似成孤立導體球電容。04/29 15:36
1F→: F12=F21,by牛三。F21=m2所受合力=m2a1,by牛二。04/21 01:13
1F→: 不用積分啊,就是要問總位能。04/18 01:20
1F→: 子彈也受力。04/15 00:05
35F推: 如果人對公尺和秒的感受還是相同的話,應該就是造成「相對04/14 23:59
36F→: 論是常識、一個貼近生活不困難的理論」。04/15 00:00
37F→: 至於聲速,還是應該比真空中光速慢。04/15 00:02
5F→: 算衝力應該不難。04/13 18:30