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 10g. What is tl f.vcxxz7+l846swb:io;x ek he order of fd.:b8ckl a (rmagnitude oalb c(:.rd8fkf 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 c 5kthn-f ynvh-4h.e:monverted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of tfk-myn4he n- 5v h:h.the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
| 
Post time 2024-8-21 21:17:15