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 jy my,g 1cv,x,v(26gc bhnyljmnt+ 5.5,go ag a mass d uod;1cnh*td6z/ xy 5of 10g. What is the order of magnitude of the rud *xdoh1/tn5;d zcy6 atio 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 converted to grams first,191be* gozgne by multiplying by 1000 . The ratio is the mass of the car divided bye1 g*ozbe9n1 g 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