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

[单选题]
A car has a mass of 1000kg. +jz aja2 saf93A mouse has a mass of 10g. What iz 54j b rgfiaeu/.x(s0s the order of magnitude of the ratio between the mass of the car to that of the mouse?r (0a/si5zguje 4x .bf

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*fj+hxgt2t )c grams first, by multiplying by 1000 . The ratio is the mass of the car*hj f2tt) x+gc divided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .