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 gv8n3l3wp ue2 mouse has a massojmr.-wue;p t4f9phs ;,+oa i of 10g. What is the order of magnitude of the ratio between the mass.jp wu;ph9,e;fors+m t ia4- o of the car to that of the mouse?
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 grams first, by multiplying by 1000 . T7ylh, 0 vg6tlphe ratio is the mass of the car divided by the mass h p7tgll0y,6vof the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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