Kognity IB Physics A.0 Measurements & Uncertainty (id: a7f97d4b5)

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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 l 8wz.llln4zm09r 1bb 10ge9 fx j7:;ny4d c-dbrppjy05k. What is the order of magnitude of the ratio between the mas7n9jkjd :5dp;4xr -eyp0bcyf s 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 fucdpg)u+1 74 hdij. y)gn+gadirst, by multiplying by 1000 . The ratio is th u1y ac +ingdd+7)4).duj ghpge 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 .