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 mouse has a mass of 10g. Whink ibm2 go q( -(umne7c8v:n2at is the order r/n3cj pkbyfpj .,i(3of magnitude of the ratio between the mass of the /3pfk (c rbp3.j,jyni 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 convertzc-eby:wah * *mhc 0l(ed to grams first, by multiplying by 1000 . The ratio is the mass of the car divih(a0bc zyel**wh-: m cded 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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