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 ardw1+v q 7+h.qdoen3txw3i h* mass of 10g. What. qtfiy l8)f( znr l,2q:l.fzp is the order of magnitude of the ratio between the mass of the car to tprnl z..8lf2 qt,ly i(fzq:)fhat 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 concbp(x) 4p+hag verted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of hx c4)g( ppab+the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .