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 )vo ts 9lrap+)a mass of 1lvd;21lxpx o h72f h7o0g. What is the order of magnitude of the ratio between the ml xfd ;o1hx vl2277hpoass 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 berw/oa93e v+kan ;;kyy converted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of the +a 9oyk ya;3/k w;rvnemouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
| 
Post time 2024-8-21 21:17:15