推 andyfc1:Halliday 8E has the like, try it. 07/05 18:43
→ andyfc1:Ch.23 #55 07/05 18:43
→ wyech:可是我沒買那本...能大概講一下觀念跟講法嗎？ 07/05 23:31
推 dali510313:請用積分ㄉ= =" 07/05 23:33
→ dali510313:用典場的基本定義去積分 07/05 23:33
→ wyech:因為我解出來答案是Qr2/3πε0R4 07/05 23:38
→ dali510313:答案是4pir/4piεR^3嗎? 07/06 01:49
→ dali510313:抱歉手殘是Qr/4piεR^3? 07/06 01:50
→ wyech:我抄到的答案是 Qr^2/4piεR^4 07/06 10:29
→ dali510313:= ="我忘了把電賀密度算進去了..把電賀密度算進去答案 07/06 10:42
→ dali510313:就對了 07/06 10:42
推 andyfc1:答案送過去囉 07/06 11:39
→ wyech:我了解了，謝謝 07/06 12:27