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 -kg.2+r(r0 kk hkgmyu 1 gthhhu/4,k1gz-iu*p no /1y5 q0reg c000kg. A mouse has a mass of 10g. What is the order of magnitude of the ratio be5cue ,h14 ggthuk/hy0 zgn- i 1/or*pqtween 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 conve. wl5 rq+gvpw44 rxi,wrted to grams first, by multiplying by 1000 . The ratio is t,5pg4 w+lr q.wv4ixr whe 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