在12.34中,有幾位有效數字?

物理中的數學2

Quiz
•
Physics
•
10th Grade
•
Hard
Kai Xie
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在0.00123400中,有幾位有效數字?
9
8
6
4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在 中,有幾位有效數字?
6
5
4
3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小貞從學校走到水果攤走了1.2340公里,又從水果攤走到飲料店走了 公尺,則小貞總共走了多少公里?
2.08
2.084
2.0840
2.08400
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知阿聖用平均速率為12.3m/s,跑了5.487秒,則阿聖共跑多少公尺?
67.4901
67.490
67.49
67.5
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
一斜面傾角為30度,一物體置於斜面上,已知重力加速度為10 ,則沿斜面加速度大小為何?
10
5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
已知半衰期的定義是,母元素為原來一半所經歷的時間,若碳元素的半衰期為6000年,則有一古物中碳元素為原來的3/4,則此古物約為多少年前的物品?(log2=0.3,log3=0.5)(提示:半衰期的次數= )
2000
3000
4000
6000
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