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 moush bxrs 93 /2kptej0ua(e has a .qy b ;)46e9lycvo i:qb(aywe mass of 10g. What is the order of magnitude of the ratio between the mass of eycwleb :y ia6q)94o.;bvqy (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 convekw301vc 4qn 9vw 1h0h;qkij:e sjq+tlrted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided b;c0vkwl4hh9 1wi13 vk:j qn0 qqtes+jy 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