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 10g. Whatvdqs9u5 n 7z8vsz ozrb-(ms 2l +ur,3n is the ordel,xmfd12y ph)ge i4d+ r of magnitude of the ratio between th ,+hx2 4id fegdypl1m)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 mt0p +fbg b/l5r) dw7omust be converted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of the mouse: 5mt/ lf70wbbdp ) gr+o$$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15