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 /y+6f2 qzkcoq*d1fnp wt28c uc.s8q4md+ hcx1000kg. A mouse has a mass of 10g. What is the order of magnitude of thesc4+8 .xu ctqc28dmw h 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 grr hz;c67;8rw7p 4e wrb u,uzzru6yh-aams first, by multiplying by 1000 . The ratio is the mass ofuzrury;u8 ez,7wrrp76z h4 a w 6;chb- 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 .
| 
Post time 2024-8-21 21:17:15