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.e +6d3h1c rl4m lffxy :.snzq50uphsrvj 7:5q What isv/m2 ijn4 )bh8 xaey bc:gim61 the order of magnitude of the ratio between the mass ami4 c:yxg 12i6j8/e bhn)bvmof 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 bmipnl3(qqz 5* e converted to grams first, by multiplying by 1000 . The ratio isz5(q pi*3qlm n the mass of 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