呢一題我唔識啊!!!可否幫我啊!!!因為我呢一科好差!!!
thx
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Physics about temperature 急!!!急!!!
2007-09-24 4:07 am
回答 (2)
2007-09-25 8:28 am
✔ 最佳答案
a)from the graph, the length is 2.5 cm when the column is at the lower fixed point
then, (4 - 2.5) / (25 - 0) = (L - 2.5) / (100 - 0)
L = 8.5 cm
b)
Rotary thermometer: angle of deflection / degree
resistance thermometer: resistance / ohm
2007-09-24 6:01 am
From the graph, 4 cm represents 25 deg.C, hence [one large square] on the X-axis represents 25 deg.C.
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At 0 deg.C (the origin of the graph), the alcohol length = 2 cm
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At 100 deg.C (position of 4 large squares), alcohol length = 10 cm
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2. The angle of deflection and the current.
~~~
At 0 deg.C (the origin of the graph), the alcohol length = 2 cm
~~
At 100 deg.C (position of 4 large squares), alcohol length = 10 cm
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2. The angle of deflection and the current.
收錄日期: 2021-04-13 13:35:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070923000051KK04723