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

[单选题]
A car has a mass of 1000kg. h y74v0ztbxr(Abw77y1qs s3qm. +ducd mouse has a mass of 10g. What is the order of magnitude of the rat7+u.wssyc1bd3 7q qmd io between the mass of the car 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 ca j03xhsmsh7v y 10;igonverted to grams first, by multiplying by 1000 . The ratio is the mass of;m3v1h00ajh yis7sgx 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 .