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

[单选题]
A car has a mass of 1000kg. A mouse hmc5/ kmc5cq ij3xx-3nas a mass of 10g. Wha5sj(+ arxp le)t is the order of magnitude of the ratio between the mass of the clpe(+rjsx5) aar to that 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 gro ,d,d-gz fqzf03da2cams first, by multiplying by 1000 . The ratio is the mass of the car divided by 2o-dg0adqcf, ,3dzfz the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .