問題詳情
26. 如圖(十四)所示，將兩個磁鐵置入玻璃管中，磁鐵甲與玻璃管底部接觸，磁鐵乙靜止漂浮在空中，不與玻璃管、磁鐵甲接觸。關於兩磁鐵的受力情形，下列何者正確？ 
(A)兩磁鐵所受合力均為零
(B)兩磁鐵所受合力均不為零
(C)磁鐵甲所受合力為零，磁鐵乙所受合力不為零，且合力方向向上
(D)磁鐵乙所受合力為零，磁鐵甲所受合力不為零，且合力方向向下
(A)兩磁鐵所受合力均為零
(B)兩磁鐵所受合力均不為零
(C)磁鐵甲所受合力為零，磁鐵乙所受合力不為零，且合力方向向上
(D)磁鐵乙所受合力為零，磁鐵甲所受合力不為零，且合力方向向下
參考答案
答案：A
難度：適中0.643443
統計：A(157),B(24),C(44),D(19),E(0)
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