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 mouse has a mass ofs;mx4 .ihikt * 6q,hzy 10g. What i+ya4ih n1cy (a .csf;ss the order of magnitude of the ratio between the mass of the car to that of tya 4cyshs1 nc+ia.f (;he 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 con1 5zsivc9ljz2x u 1n aqr46sa/verted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of1rac9zjnli6s 1qa/s 4u2 5 vzx the 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