問題詳情
3. 如圖，A、B 兩球荷等量同性電，電量為q，兩球質量皆為m，其中 B 固定，A可自由移動，懸掛A、B兩球的繩長皆為 ，平衡時兩者相距 l x，x為多少【 3 】?
參考答案
答案：B
難度：簡單0.87369
統計：A(69),B(5167),C(103),D(574),E(1) #
個人：尚未作答書單：幼兒語文、布魯姆的教育目標、幼兒情緒發展
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