本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IB物理学
[单选题]
A car has a mass of 1000kg. A mo r y8-;6i4plgnwhm+j luse has a mass of 10g. What is tkn 3u*xp: dnxjqlp:i:35r*mj dk. tz-he order of magnitude of the ratio between the mass of the car to that of the moujrdpjd p k:n *um-q:x3li3nkt.:x*5zse?
A. -5
B. 5
C. $10^{-5}$
D. 100000
参考答案: B
本题详细解析:
The mass of the car must be converted to gramt2:x5hliz w6s s first, by multiplying by 1000 . The ratio is the mass of l:xw2z6ti 5shthe car divided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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