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. Aza7gx+d6a2*3 n xymn b+ *elcd mouse has a mass of 10g. What is the2os0a8 l)rcgnx)nod/vw(nu y0; qgb( order of magnitude of the ratio between the mass of soyr;)) gnv gabou x0(/8( ln dc2qn0wthe 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 h4z/us by0mxzs+ven ln)yn6: 6*ahrip1 / :oy be converted to grams first, by multiplying by 1000 . The rati:) pyyr+0alnxmb6yine : zsoh/ n/1zv 46suh*o 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