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

admin

本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics

[单选题]
A car has a mass of 1000kg. A mouse has,ivhpl( oo rwq/w/* ;w a mass of 10g. What is the orda9*wv jx putj4 493k cjh1e2dzer of magnitude of the rativa t 93xu4jpjekzc 291d4jwh *o 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 beh+u zjy. 51v0qb z7iuu converted to grams first, by multiplying by 1000 . The r+5 7uhzbvy ji0qu.zu1atio is the mass of 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 .