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

[单选题]
A car has a mass of 1000kg. A mouse hasg(4atzr bg+r, a mass of 10g. What is the order of 5mwrk.ml2e t 27 j*kygmagnitude of the ratio between the mass of the car to that of kwm7 g j2*2tlmr5y.kethe 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 convert.dc1 ws. rit-ied to grams first, by multiplying by 1000 . The ratio is the mass odi. 1.c- witrsf 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 .