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.rnz-ccc, l3.p f04d-y)p)pju, rgf ktA mouse has a mass of 10g. What is the order of magnitude of the ratio between thd 0fpk4jr ) ,pyu-ftg)e 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 multiplyin8mfpml 1 b*ljxv w(5w;g by 1000 . The;xjf1*m5lm v ( blpww8 ratio 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