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. jefx9(id*n9e w8noja:75tr k A mouse has a mass of 10g. What ig fz 2i/, a7pxtvsq;g0s 0f,nis the order of magnitude of the ratio between the mass of the car to tsvif 2p/0s,0z t7agn ,xig; qfhat 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 multiplyin u-z3 . nc-(rcya; hf0azn.vbdg by 1000 . The ratio is the mass of the car divided by the mass of the n-zcvy0-u.h3cn;(d z raa f b.mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15