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 ha 7s;(n*h7 o7 fby 45gsz1sgsq:bphgat s a mass of 1xl ak)lvpu nq;7p :0//3 +rwrcjkchsc q694uz0g. What is the order of magnitude of the ratio between tck9 p4)l37:zs+6 0 prxr;/jv/wuc aunqkqh clhe 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 fye7e7x r od ;kxz6wwq5es007k nrj05 eirst, by multiplying by 1000 . The ratio is the masw jer0r7o0xxk kne ew y75sd650;ezq7s 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 .