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

[单选题]
A car has a mass of 10.4jq5y ,n8( m n.f 4ugytnwkcf00kg1, pi 3wbd-wby0 9ojdd. A mouse has a mass of 10g. What is the order of magnitude of the ratio between the mass of the ca-obw 09bd3y,iwdd1p jr 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 +xl 4j1tfc7pe converted to grams first, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of thtxjp+ felc7 14e mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .