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 7aq8zl-(:awk4 mhu plis the order of magnawlq-8 4:zlamh p 7u(k)j ey qtkalx)*bw5/o bn0l b43itude of tj5nktea* bwq4 y)xlb b/)l0 o3he ratio 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 converted to grams first, by multiplying by 1000 .x)jiw(u -zwq 1sl4d:x The ratio is the mass ofx 1 4l(zwj-qw:)sdi xu 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 .