1).
The number of heartbeats per minute of a humming-bird measured by a biologist
is 980, and the relative error is 1over245. What is the possible range of the number of heartbeats per minute?***
2).
Mary measures that a water bike moves 500m at a speed of (25±.04)m/s , the percentage error of the measure speed =_________
p.s.(***要步驟)
兩題數 , f.3程度 唔該幫下手啦!
2010-08-17 9:44 pm
回答 (1)
2010-08-17 9:55 pm
✔ 最佳答案
1)980±980/245=976~9842)0.4/25x100%=1.6%
收錄日期: 2021-04-19 23:05:25
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