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 :n. afqraaget z0(c)5a masssr1 l 1bxmpj*; of 10g. What is the order of magnitude of the ratirbpm11s *;l jxo between the mass 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 (hjl*w/j rml-y/;v b t. The ratio is the ma/j-*;y blrh lm/wtvj(ss of the car divided 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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Post time 2024-8-21 21:17:15