Kognity IB Physics A.0 Measurements & Uncertainty (id: a7f97d4b5)

[单选题]
A car has a mass of 1000kg. A mouse has a mass of 10g. v 4ab, 1nnbkr8xl t0n)What is tx1 yeq b/n8g4xhe order of magnitude of the ratio between the mass of the car to thagye1x bn48q/x t 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, by multiplying by 1000 . Te it4vr) aa4bvf j;n76d69de ahe ratio is the mass of the car divided by the mass vraan;d d94ej476b iv)6 atef of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .