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 mouselqo+.*wh; b ivx/8 hsewe r ; 3j.tjbht+00hll has a mass of 10g. What is the order of magnitudht0b wllj t03he+r;.j e of the ratio 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 ftzpxp f2/w wo8;g,xbb,;00lkw *pbsy irst, by multiplying by 1000 . The ratio is the mass of the car divided by the mass of thepwf lbwx/go0 02t,bppx sy;,k;*8zbw 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