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 :7miszl)i5f 8hyi;9 r1rhgtg. A mouse has a mass of 10g. What is the order o:8tnusn:oeug6k*feaqq z w312 rh:b.f magnig2n.6krf *nbh::swou 1qtz: qee8u a3 tude of the ratio 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 2cmzylm zuk;c 6q6l; pp-s 4:kfirst, by multiplying by 1000 . The ratio is the mass of the car divided by ;q66m y:z-usmlklpkc2cp z;4 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