[考古] 89清大
A pair of the position and negative charge Q -Q is placed on the y-axis
with a separation d between them. In the asymptotic limit r >> d, the
approximate electric field E(r) is ?
+Q
|
|
d |---------------->
| r E(r)
|
-Q
Qd
我是怎麼算都是 -----------
4πεr^3
但是解答是我的兩倍 = =
謝謝^^
＝≒≠≡≡＜＞≦≧
: ∴∵∫∮∩∪㏑㏒√→∞∠△°
: ⅠⅡⅢⅣⅤⅥⅦⅧⅨⅩ
: ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ
: αβγδεζηθικλμνξοπρστυφχψω
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※ 編輯: pobm 來自: 125.226.173.114 (06/15 16:20)
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