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 mo +ei*g p(xm(xjuse has a mass of 10g.wbue+a /36(m- h s3hgfr 0nbqy What is the order of magnitude of the ratio betw/3 mf6rhhg ea-s(bw nu03ybq +een 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 mustnf3 xcs6.zs ::m1pcm k6tq ymp 535vyt be converted to grams first, by multiplying by 1000 . The 3f::ssz3 c1.ykmpcmmt p6 nq5 t56xy vratio 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