物理 - 考試
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By Linda
at 2013-05-27T22:09
at 2013-05-27T22:09
Table of Contents
1.有一匝數為N,電流強度為I,面積為A之線圈,置於強度為B之磁場中,則該線圈所受之
最大力矩為(A)NBAI (B)2BAI (C)BAI (D)0 答案(A)
2.兩種不同金屬的圓棒,長度相同,半徑各為R及r,R = 2r。將這兩種金屬棒連接在兩溫
度之間,已知它們所傳導的熱流相等,則其熱傳導係數K及k的關係為:(A)K = 4k (B)K
= k/2 (C)K = k/4 (D)K = 2k 答案(c)
有請高手指導觀念了題~~
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最大力矩為(A)NBAI (B)2BAI (C)BAI (D)0 答案(A)
2.兩種不同金屬的圓棒,長度相同,半徑各為R及r,R = 2r。將這兩種金屬棒連接在兩溫
度之間,已知它們所傳導的熱流相等,則其熱傳導係數K及k的關係為:(A)K = 4k (B)K
= k/2 (C)K = k/4 (D)K = 2k 答案(c)
有請高手指導觀念了題~~
--
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