求教,有一个半径为R金属圆柱体
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送交者: 008 于 2005-5-04, 22:02:26:
--- 送交者: 葛观 于 2005-5-03, 21:53:52:
--- 另有一个同样半径为R, 但内部贯孔r的圆柱体,两者加热到同一温度,问R的变化哪个大?为什么?
A: 圆柱体变化大
B: 内部贯孔r的圆柱体变化大
C: The two change the same amount.
Please just choose one, no reasoning needed. I don't have enough knowledge to understand all the reasoning. I think the answer should be decided by vote.
所有跟贴:
- C, if the material is homogeneous. - RRZH (0 bytes) 2005-5-06, 10:22:18
- B.实例:拧不动的螺丝帽,拿喷灯一烧就拧动了。 - 无知 (0 bytes) 2005-5-05, 11:02:25
- 票数多的算还是票数少的算? - boxer (232 bytes) 2005-5-05, 10:52:21
- C - yuffie (0 bytes) 2005-5-05, 01:09:25
- x - peanut (78 bytes) 2005-9-07, 16:41:00
- x - peanut (77 bytes) 2005-9-07, 16:40:31
- C - teacup (0 bytes) 2005-5-04, 23:26:30
- A, simplely A - BerkeleyWolf (0 bytes) 2005-5-04, 22:41:39
加跟贴
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