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

[单选题]
A car has a mass of 1000kgwyb6)nez+k qxa-qm+ y 8n y)6k.ay wi l3 )hr0 08nhxdmhl7(xgfc5(iz2 A mouse has a mass of 10g. What is the order of magnitude of the rat7wnxycl0rlfi8(hxha (5dmz 2 g i 30)hio 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 multiplyinpb ffa*l.d3 ;v k+7viie2hd, kg by 1000 . The ratio is the mass of the carvk*a.ehib+kf pv,3fdi 7 2;ld divided by the mass of the mouse: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .