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 moum:w68lm br9 rsc w6um2se has a mass of 10g. What is the orde fe(83jy 9 ghnd+zru9pr of magnitudeg9dj9n 8 (z y+purfh3e 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, by ,053roz 3elu l1tgv cfavk:+f multiplying by 1000 . The ratio is the mass of the car divided by 0 zfac51gl o fe +tv,3k3:lurvthe 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