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

[单选题]
A car has a mass of 1000kg. A mouse hah8))vc pw0r k5( qddnps a mass of 10g. What hee r +ra5p(m.is the order of magnitude of the ratio between the mass of the car to that or(r m+5eae ph.f 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 multj5g3oj 5r hg3k+7 bl8dy+w ktdiplying by 1000 . The ratio is the mass of the car divided by the mass of the mouse:jd3r+yk oljtb7 8gw5g kd53 +h $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .