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. .b3 jk6xdj5):*n n+g+dctw xal ;pcpjA mouse has a mass of 10cw tu7oq1hp-rs 1cnu 4+20qpug. What is the order of magnitude of the ratio between the mass of the car to that 2 cq-1p + uncw74r uusqh0tp1oof 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 multiplying by 12jbd2i 5bigu- 000 . The ratio is the mass of the car divided by the mass of jgi b2ud2-i5bthe 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