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 ;/ hrhtb yh1v)xo5;g*pca -hu. A mouse has a maj ,4 ajhtx3xv90z:amm ss of 10g. What is the order of magnitude of theahmtjv3a:m 9z40 x x,j ratio between the 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 conr y.nw 7c/in)/u3ucnq verted to grams first, by multiplying by 1000 . The ratio is the mass of the car din/3.qu y)inc7w cun/rvided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .