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.kzeg rz-jbw 0z11n6z 7 A mouse 7rp;,fhs ,+ji./n l tvtpdp0 ehas a mass of 10g. What is the order of magnitude of the ratio between the mass of the car to that of thev0; . lthjpp,i/s+ p,frt7n de 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 to7fsjxh y g u-.qxd- c2,b4.xac grams first, by multiplying by 1000 . The ratio isc- jf .-,b2 sa hduxgqxyxc4.7 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 .
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Post time 2024-8-21 21:17:15