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,me 3 auya487qsf:g 1ysb z5jp. A mouse has a mass of 10g. What is the or1.hp.cxj ecdy.a1iav/q.b9 g der of magnitude of the ratio between the mass of the car to that of the vd1 j ax.gpq.eiyc9ha c .1b./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, bykl/63kg.fxajc3 +ms ea ab;s 4 multiplying by 1000 . The ratio is the mass of the car dkk +4. c6fbss/a;xale mjg 3a3ivided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .