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 mai)ju 9d6zoxq 4z5z :p 7iy3o:ufzwo4oss of 10g. What is6po;bnxg/ uc/s8k ( wnbtb,)i the order of magnitude of the ratio between the mass of the car tobso; wg8xtp6k/ c/b(nnub i,) 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 converte:f5 lqrf*2i3 c4u j0kgrg5plid to grams first, by multiplying by 1000 . Thu f:35 q4gr20*fcl krgji5ilp e ratio is the mass 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