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 a mass ok cu6 ps85axi5+rl6npfq ;rc6f 10g. What is the ordera9weku kst4z.za4 4gp;) d* ct of magnitude of the ratio between the mass of the car to thatwsk*ac)t4epd tagzu9k4 4z.; 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 multiplying by 1000kun 2h e8h.pm5 ;qi.mtcwrup4xy;4l 2 . The ratio is the mass of the car divided by the mass of the mo qnuy4c2p.pu;hm4 .w8rmi k;xlth5e2use: $$ \frac{1000 \times 1000}{10}=100000 $$ As $100000=10^5$, the order of magnitude is 5 .
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Post time 2024-8-21 21:17:15