本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics
[单选题]
A car has a mass of 1000kg. A mo 4xz6/t*nony kq;)xbquse has a mass of 6 xjii .8wk- jsvoln (2h:lpk410g. What is the order of magnitude of the ratio between the mass of the car to t6. 2o:lnvxp i -(jkhwk4js 8lihat 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 convertfvw4kfayo, (0zn/3kl.b d v9oed to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of the m vnya 40d9fwok3.z/ok (,bvfl ouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15