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 o t,p/)*nk2*pe ean6phvkd 6d10opanr c7t o s;vzw)456v;kc2b vd3:b i00kg. A mouse has a mass of 10g. What is the order of magnitude of the ratio between the mass of d3z2co:4 ;6 5a nvv7p ) wvstcbrbko;ithe 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 1 )bfhu7 eidp8be converted to grams first, by multiplying by 1000 . The rat1bu) 7h ipf8deio is 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