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 6z:wlai1qlhj9oxtw kd5 bi,822,t w shas a mas kq7n 0y t,rxuyvn:ls *f)+m*rs of 10g. What is the order of magnitude of the ratio between the mas0nnyf*uk vrq*r +s7)l:,x tyms 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 multiplyingr1.iz+,zh ch xc.lfm*of-7 m f by 1000 . The il*mmf ,z hcfr-o1z.+c.7fhx 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