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

[单选题]
A car has a mass of 1000kg. A mouse has a mass of 10g. What is the order of jjs4u mv6l1 xmb1ok 9z-7ef4j mt yr5c66 jlgwv(mql36 agnitude of the ratio between the mas3j rl g5vqcw(6t6 l6yms 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 converted to grams first, by multiplyip )er a189egenng by 1000 . The ratio is the mass of 81 )gr eea9nepthe car divided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .