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 of 10g. What g19ud.frn.z,og/tii is the order of m 5rsgn)ynt5pztbi83d ;6pe j*agnitude of the ratio between the mass of the carz gipysentp3nr8)jt b 5;d*56 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 first, by multiplying b -1tcomx/)h tly 1000 . The ratiolt/m- 1t)hoc x 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