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 mambk9 9oek p4r70jj6ocss of 10g. What is the ompnw;y2 p+ jwx; i(9nhrder of magnitude of the ratio between the ( wpjh ;9n imwx;y2pn+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 grams first, by multiplyin.7h1q *nvia9amskse4 x.a :ucg by 1000 . The ratqeh:m1cka4 x.s9vas7n i* a.uio is 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 .
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Post time 2024-8-21 21:17:15