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)g0yx db::4jdm9p1+ niwzu z d mouse has a mass of 10g. What iy), n po7sr+c(.labqn s the order of magnitude of the ratio between the mass of the co+7,lqsy( bncn pa. r)ar 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 bl20cy r2w ne y22jdxpoml0a q/f1i( p;e converted to grams first, by multiplying by 1000 . The ratio is the 0;(mw 2xc ap0y2f2/ pnrlldqeij12yo 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