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

[单选题]
A car has a mass of 1000kg. mdsn:-bhga +1A mouse has a mass of 10g. What is the order 7c1qw zx5x;xlof magnitude of the ratio between the mass of the car to that of the moqcw57x 1lzx; xuse?

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 fir)cn7if mu 42odst, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of the mouseioc 7d)42funm: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .