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 msd/kd8w6 hjy v+53tuqa;4ki)w;h j+pmx1nhuv xg * -nrss of 10g. What is the order of magnitude of the ratio between the mass of the car to thathiv -jmxg r*;) ;npnxkuhw4+1 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 convcdm2n8 k+w y4lkam5u j5d9m3herted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of the mouse:um9mdd hkljm a3 +5cnwy4k825 $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15