Kognity IB Physics A.0 Measurements & Uncertainty (id: a7f97d4b5)

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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 mass of zj: qe6jvaxf3 q.2o/n 10g. What is the order of -uuw m.;4c1mqy +z(m cun3i spni1rm g8kk,+xmagnitud38, km.w1 i 4 cz mi+ muc(u;nkgqrnypsuxm1-+e 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 first, mm+mo-5)rxtjz577 ttxl0cb tby multiplying by 1000 . The ratio is the mass of the car dttl 7m55t-j m+t ) zbx0rcx7moivided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .