請幫忙解決下列數學題
2014-10-06 5:35 pm
When a metal rod is heated from 23゜C to 183゜C, its length increases from 3.47m to 3.52m. Find the rate of expansion in mm/゜C.
回答 (1)
2014-10-06 6:08 pm
✔ 最佳答案
Temperature change= 183 °C - 23 °C
= 160 °C
Length change
= 3.52 m - 3.47 m
= 0.05 m
= 5 cm
= 50 mm
Therefore, the rate of expansion is
50/160 = 0.3125 mm/°C
收錄日期: 2021-04-30 01:37:57
原文連結 [永久失效]:
https://hk.knowledge.yahoo.com/question/question?qid=7014100600016