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. A mouse has a mass of 10bi6,. orf+:yji9x n .fcr tn7bt/yxq/b 89yaxg. What is the order a+lmjri ,9n:k of magnitude of the ratio between the mass of the car to tham:ij r9n,la+ kt 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 fir4 worzm3oy k.b wh,p*9 g;mdo*st, by multiplying by 1000 . The ratio is the mass of the car divided by the mass owg9 , 4mhdwobk;m3. *pozroy*f the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .