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 1cb9u2 cx:p9s x000kg. A mouse has a mass od9+hw h/kkq 5- j3effpf 10g. What is the order of magnitude of the +-h/p 9jhfdkf5 qw ek3ratio 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 fir4lp-djqm 3q9 fyghd 8/st, by multiplying by 1000 . The ratio is the mass of the car divided by the masd qylqhp4-8 dj93gm f/s 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