[問題]105 東石高中教甄
【出處】(習題或問題的出處)
105 東石高中教甄
【題目】(題目的文字敘述,如有圖片亦可提供圖片)
17&18 http://i.imgur.com/g08X9nl.png?1
21 http://i.imgur.com/qF2FHGv.png
【瓶頸】
17. C D ; E F ; G H 為等電位點 彼此連接
等效電阻 = r/2 + r/3 + r/3 + r/2 = 5r/3
18.框架以相同速度進入磁區 框架進入過程中
無論是平均感應電動勢 或 順時感應電動勢
MN感應電壓 Va = Vb < Vc = Vd
21. 輕桿與地面動摩係數極大
視輕桿於水平方向不滑動
重球位能轉為移動動能 與 轉動動能
mgL = 0.5 mv^2 + 0.5 I w^2
I = m L^2
v = L w
v =[g L]^1/2
【解答】 http://i.imgur.com/D9BtwHL.png
跪求高手 指點迷津
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